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Le Technopôle enfin protégé!

 

Tant attendue et espérée, on n’osait plus trop y croire mais finalement la nouvelle est tombée lundi dernier: la “Grande Niaye de Pikine”, soit le Technopole, est désormais officiellement protégée!!

Le Ministère de l’Environnement et du Développement durable a annoncé que le Technopole “et ses dependances” seront “contenues dans une Réserve naturelle communale de Biodiversité, en rapport avec les Collectivités territoriales limitrophes.” Cette zone humide d’importance internationale sera donc, à juste titre, inscrite dans la Convention Ramsar – la neuvième en son genre au Senegal, après Tocc-Tocc (au bord du lac de Guiers), le parc national du Djoudj, les réserves de Ndiael, Guembeul, Somone, et Palmarin, le PN du Delta du Saloum, et enfin Kallisaye en Casamance.

Le communiqué de presse peut être consulté ici sur le site de l’Agence de Presse Sénégalaise.

 

Technopole_Waders_20160806_IMG_4525

 

Je salue ici le combat mené de longue date par l’association NCD, qui a su rassembler les divers acteurs, et notamment le Ministère de l’Environnement, maraîchers et autres usagers, et même la Fédération de golf. J’espère que l’association saura mobiliser les ressources et répondre aux attentes pour améliorer la gestion du site, et que les autorités – notamment la police de l’environnement – pourront infléchir la destruction progressive du Technopole. en particulier la lutte contre le dumping sauvage quotidien d’ordures mais aussi contre le grignotage immobilier (lire à ce propos cette histoire assez édifiante mais malheureusement trop courante au Sénégal, sur la tentative d’implantation illégale d’une entreprise au Technopole).

Espérons également que d’autres sites suivront, car de nombreuses lagunes, niayes et autres marais côtiers du pays méritent tout autant d’être protégés – je pense notamment au lacs Rose, Tanma, Mbeubeusse et Malika, ou encore les lagunes de Yène et Nianing et Pointe Sarène.

La protection formelle du Technopole n’est bien sûr qu’une première étape: vu le potentiel en termes d’accueil des amateurs d’oiseaux et de nature, et en matière d’éducation à l’environnement des écoliers et autres riverains, on peut s’imaginer la mise en place d’un vrai centre de visite, des sentiers balisés, voire même la construction d’observatoires comme cela a été fait à la réserve de la Somone notamment.

 

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Barges a queue noire (Black-tailed Godwit), l’une des espèces menacées qui utilisent régulièrement le Technopole comme site d’hivernage et d’escale.

 

Petit clin d’œil aux contributions modestes de l’equipe de SenegalWildlife, le communiqué de presse mentionne que 223 espèces d’oiseaux ont déjà été observées sur le site. Ce chiffre est certainement basé sur la liste que nous tenons à jour depuis quelques années, suite à un inventaire initial établi par Betsy Hopkins vers 2005 puis repris par Paul Robinson en 2011-2014.

C’est donc le moment de partager cette liste ici avec vous, qui compte maintenant au moins 230 espèces car ces derniers mois ont vu l’ajout de plusieurs volatiles rares: Bécasseaux rousset et de Baird, Hirondelle à croupion gris, Pouillot ibérique, etc. – toutes des observations plutôt anecdotiques bien entendu, car l’intérêt du Technopole réside bien plus en son importance internationale comme site d’escale et d’hivernage pour des espèces telles que la Spatule blanche, l’Echasse blanche, la Barge à queue noire, le Goéland railleur ou encore la Guifette noire.

 

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Spatule blanche (Eurasian Spoonbill)

 

La liste mise à jour¹, avec commentaires sur le statut général et le statut de reproduction de chaque espèce au Technopole, se trouve ici sous forme de Google Spreadsheet. Comme toujours, les corrections et compléments sont bien sûr les bienvenus!

Puis pour un acces direct aux articles que SenegalWildlife a consacré ces dernières années à notre hotspot favori de la région dakaroise, il suffit de se rendre sur cette page.

 

GreyPlover_Technopole_20170303_IMG_8956

Limicoles, Goélands railleurs, Sternes hansel et une Guifette moustac au Technopole

 

Maintenant il ne vous reste plus qu’à aller sur place pour y découvrir cette zone humide urbaine tout à fait exceptionnelle – dépaysement garanti!

 

¹ Le Barbican barbu est la derniere espece a s’ajouter a la liste, avec une observation qui nous semble tout a fait credible, de deux individus le 13/10/18 par E. Pilotte (eBird checklist)

 

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Technopole updates – waders, gulls, and a hybrid heron

It’s been a while since I last talked about Technopole on this blog, so here’s a quick update on recent sightings at our favourite Dakar hotspot. I’ve been fortunate to visit several times in the last few weeks, most recently on August 22nd and September 2nd. At the end of August, the site was the driest it’s been in many years: barely any water left on what I usually refer to as the “central lake”. Only some shallow water remained on the far south end along the main road, and even less in the north-east corner close to the golf club house. Even the level of the large reed-fringed lake on the north-east side has dropped substantially.

As a result, there are far fewer birds around than would usually be the case at this time of the year, when the first rains start filling up the lakes again. There are now very few waders, herons and cormorants, hardly any ducks and fairly few gulls and terns (which is more usual during late summer). With the rains finally arriving in Dakar – though just four or five decent showers so far – the site has rapidly started filling up in the past two weeks and is becoming more attractive once again.

This is what it looked like roughly between June and the end of August: hardly any water!!

Technopole_20180610_IMG_2354

 

Despite the low water levels, diversity remains pretty high, with still some 70-75 species typically seen on recent visits. The highlight on Aug. 22nd was yet again a Franklin’s Gull among the flock of Slender-billed Gulls, most likely the same 2nd c.y. bird as in May and June, seen here for the fourth time (see this piece about the species’ status in Senegal and more broadly in West Africa).

Great White Pelicans are particularly numerous this year, with an impressive 650-700 birds present at the moment. They most likely come from the Djoudj colony; unlike in previous years the species is also present daily at Ngor, though in much lower numbers than at Technopole. And a few days ago I even had four flying over the house at Almadies, yet another garden tick.

Besides the ever-present Black-winged Stilts and Spur-winged Lapwings, (both still with several older chicks and quite a few locally hatched juveniles), Ruff is now the most numerous wader, though there are 30-40 birds only… compare with the ∼500 Ruffs counted last year in August! Also just four Black-tailed Godwits (also a Bar-tailed on Aug. 12th), single Whimbrel, Marsh Sandpiper, Dunlin, 4-5 Little Stints and just a handful of Sanderlings, while the first Curlew Sandpipers were seen on Sept. 2nd. On the same day, a Little Ringed Plover was present near the fishermen’s hut – there don’t seem to be many “autumn” records at Technopole of this species. A Kittlitz’s Plover was seen again on Aug. 22nd, following several records in previous months: could the species have bred at Technopole? In June we found a nest containing two eggs and several additional terrtitories near Lac Rose.

MarshSandpiper_Technopole_20180822_IMG_3084

Marsh Sandpiper / Chevalier stagnatile

Sanderling_Technopole_20180902_IMG_3160

Scruffy Sanderling…  a moulting adult (Bécasseau sanderling ad. en mue)

 

On July 7th, a presumed hybrid Little Egret x Western Reef Heron was seen along the track leading to the golf course: interesting bird, as it may mean that there are mixed broods at the Parc de Hann colony, unless of course it was born in the Somone or another heronry. Or that it may be breeding there at the moment, as our bird was obviously an adult in breeding plumage, judging by the pink-reddish feet, bluish lores and long feathers extending from the back of the head. While difficult to judge, the bill length and shape also seems to be more like Little Egret. In addition to the features in the pictures below – in particular the whitish head, central neck and lower belly – we noted a fair amount of white on the wing, mainly towards the base of the outer hand.

WesternReefxLittleEgret_Technopole_20180707_IMG_2889

Presumed hybrid Little Egret x Western Reef Heron / probable hybride Aigrette garzette x Aigrette des récifs

WesternReefxLittleEgret_Technopole_20180707_IMG_2895

Head shot of same bird

Now compare with this typical Western Reef Heron, photographed during my most recent visit to Technopole:

WesternReefHeron_Technopole_20180902_IMG_3152

Western Reef Heron / Aigrette des récifs

Our bird corresponds to presumed hybrids found in southern Europe and in Morocco, though we can’t rule out the possibility that it is in fact a rare dark morph Little Egret, as these do seem to exist… mcuh remains to be learned about these egrets! For more on the identification of Western Reef Heron and Little Egret, see Dubois and Yésou’s article in British Birds (1995).

Talking of herons, here’s a breeding-plumaged Great Egret: note the entirely black legs and feet as well as the mostly dark bill, with just the some yellow still apparent on part of the lower mandible. The bare skin around the eye and on the lores could be described as pale turquoise, though it transitions from light green to more bluish tones. Quite amazing how these birds completely change the colour of their bill and legs during breeding season!

GreatEgret_Technopole_20180822_IMG_3121

Great Egret / Grande Aigrette

 

Besides the above waterbirds, Technopole of course holds lots of good other birds: at the moment, there are a few Broad-billed Rollers that appear to be breeding, and other wet-season visitors such as Woodland Kingfisher and Diederik Cuckoo are also around. And while breeding wasn’t confirmed this year, Red-necked Falcon is still seen on most visits, usually flying around or actively hunting. Zebra Waxbill was more of a surprise, as I’d only seen this species on a few occasions in winter. The lack of rain may have prompted these birds to wander about and somehow make it to Technopole.

Last Sunday I paid an early morning visit to Yène-Tode, but despite the recent rains the lagoon is still largely dry and didn’t hold many birds… The first few puddles had formed, but I reckon it’ll take several more decent showers before the lagoon fills up again. The highlight were two Spur-winged Geese, a species that is rarely seen in the Dakar region and that somehow manages to largely avoid Technopole. To be continued!

 

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White-faced Whistling-Duck / Dendrocygne veuf (Technopole 2.9)

 

 

Franklin’s Gull in Senegal & West Africa

A new observation of a Franklin’s Gull at Technopole, on May 20th, prompted me to have a closer look at the records of this American species in Senegal and more generally across West Africa. I’ve been compiling records of Nearctic vagrants for some time now, which I may use one day to write up a formal publication on the topic – the list currently includes 83 records of 18 different species and some patterns are starting to emerge.

No less than 21 of these records are of Franklin’s Gulls, though these correspond to at least 36 different observations (one record can refer to a bird seen over several dates). As such, this is by far the most frequent American vagrant seen in Senegal. It’s actually been annual at Technopole since 2011, year that saw the arrival of three different birds. In the following three years, at least five different birds were regularly seen, to the extent that Franklin’s Gull became an expected feature at Technopole during that period (I was lucky to see one of these birds in July 2012, during a visit with Paul). It’s been quite difficult to determine how many records there actually are, as it’s not always clear when multiple records relate to a single bird, and whether the recent spring sightings at Technopole (2015 – 2017) may also be all of just one returning adult.

Here’s the most recent bird:

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Franklin’s Gull / Mouette de Franklin, Technopole, 20.5.18

This year’s bird is clearly not a returning adult, as it appears to be a second calendar year (“first summer”) bird. Ageing Franklin’s Gull is not always straightforward – see K. M. Olsen’s comment in this short post by Paul – but I think this bird can be fairly safely identified as a second year bird, based on the head pattern (adults such as last year’s should have a completely black hood) combined with a small amount of white in the primary tips – and note active moult of primaries.

FranklinsGull_Technopole_20180520_IMG_2112

Franklin’s Gull / Mouette de Franklin, Technopole 20.5.18

This is what we have in terms of records so far – corrections and additions welcome!

  1. 29.5.83 Delta du Saloum, Fatick, paired with Grey-headed Gull, sitting on nest (Erard et al. 1984)
  2. 17.1.86 Ile de Gorée, Dakar, first winter (F. Baillon) (Baillon & Dubois 1992)
  3. 24.4.86 Delta du Saloum, Fatick, among Grey-headed Gulls (C. Devisse) (Baillon & Dubois 1992)
  4. 3.12.88 Plage de Hann, Dakar, adult (J. J. Blanchon, P. J. Dubois, J. P. Pillion) (Baillon & Dubois 1992)
  5. 18.2.91 Plage de Hann, Dakar, first winter (P. J. Dubois, P. Le Maréchal et al.) (Baillon & Dubois 1992)
  6. 28.2.07 Saint-Louis, adult (J. Piette; H. Dufourny; ABC Recent Reports Vol. 14(2) & 15(1))
  7. Oct. 2008 Ngor, Dakar (French seawatch team)
  8. 26.1.11 Bao Bolon, Kaolack, 2nd year (R. Ottvall et al. – trip report here)
  9. 24.7 – 1.8.11 Technopole, two 2nd year (P. Robinson)
  10. 5.8.11 Technopole, 2nd year, different from previous two birds (P. Robinson)
  11. 29.10.11 Yoff, Dakar (P. Robinson)
  12. 11.2.12 Technopole (J.-F. Blanc, S. Cavaillès)
  13. 3.5 – 18.8.12 Technopole, up to three seen min. nine times (P. Robinson, S. Cavaillès, BP)
  14. 18.5.12 Almadies, Ngor, near lighthouse Pointe des Almadies, seen from boat (P. Robinson)
  15. 16.4 – 4.8.13 Technopole, up to four seen min. eight times (P. Robinson et al.), also one on 18.8 at lac Mbeubeusse (P. Robinson, G. Citegetse et al.)
  16. 6-16.3.14 Technopole, adult (P. Robinson; J.-F. Blanc)
  17. 15-20.3.15 Technopole, adult (BP; J.-F. Blanc)
  18. 3.5.15 Technopole, adult (BP) – possibly the same as in March, or a different bird (and treated as such in this list).
  19. 13.7.16 Technopole, adult (W. Hagemeijer, M. van Leeuwen; photo on observado.org)
  20. 14.5.17 Technopole, adult (BP)
  21. 20.5, 10.6, 7.7, 22.8 & 20.9.18 Technopole, 2nd year (BP, M. Lecoq, G. Caucanas)

There’s obviously a clear increase in the number of records in the last eight years, even since 2007 after which this neat gull was not seen during two years only. The arrival of up to five different immature birds in 2011-2014 is noteworthy and as far as we know this was unprecedented in Africa. With the exception of this year’s bird, it’s quite possible that the single adults seen at Technopole since 2014 all refer to one or more of these original five, spending the winter further south and moving back north through Senegal in spring.

The near-absence of records prior to 2011 doesn’t mean much, since observer coverage was much lower then, so it’s hard to say anything much about longer term trends: the increase in records is probably in a large part related to increased observer pressure, particularly in Dakar where the majority of records are from. This also makes more sense, rather than that it reflects a real increase in records, considering that Franklin’s Gull is a species that’s said to be declining, particularly in the U.S.

Below is an attempt to plot the number of observations (not records!) and the number of birds involved, based on available data up to early June 2018.

FranklinsGull_Records_Year

Here’s one of the 2011 birds from Technopole, thought to be second year:

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2nd c.y. (30.7.11, Paul Robinson)

This one is from barely a week later, and is thought to be an adult moulting into winter plumage:

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ad.? (5.8.11, Paul Robinson)

And here’s the adult in full breeding plumage from May 2012 at sea off Almadies. Besides the all-dark hood, note the greater amount of white in the wing tips compared to immature birds:

franklins_1

Franklin’s Gull / Mouette de Franklin, Almadies, May 2012 (P. Robinson)

 

Trying to unravel any seasonal patterns is tricky with so few records, though in recent years it’s clear that most birds show up between March and August, with the most recent observations all from March, May and July. There are only a couple of October records, none from September and November, and at least since 2013 there’s no evidence of wintering birds (if there were any on the Dakar peninsula, we’d probably see them at least from time to time at Technopole!). On the chart below, I’ve included birds that were seen over multiple months in each of the months’ totals, hence the sum of records exceeding 21.

FranklinsGull_Records_Month

 

The breeding record from the Saloum delta is of course intriguing, and it’s not excluded that more attempts have occurred again since the 1983 record.

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Franklin’s Gull outnumbering Slender-billed and Lesser Black-backed Gull on 23.7.13 at Technopole! (Paul Robinson)

 

Records from elsewhere in West Africa are much rarer than in Senegal: in Mauritania, one was seen on 27.1.06, followed by a second record on 17.4.16, both at Banc d’Arguin (Bull. African Bird Club 23: 238), then a third on 23.4.17 in Nouakchott (see Robert Tovey’s account on the find here). In The Gambia, Franklin’s Gull was seen in 1984, on 17.1.02, and again on 8-9.2 until 15.3.05 at least; all records are from Banjul. The first for Ghana was an adult on 8.5.11 on the Sakumono lagoon on the outskirts of Accra.

Nine records are known from Morocco, the most recent one being a first-winter bird on 12.2.16 at Oued Souss (Agadir) – so clearly not one of the Senegal birds as these were all adults by then.

Elsewhere in Sub-Saharan Africa, there are several records from South Africa, at least two from Mozambique, one from Congo-Brazzaville (one on 14.11.15 at the Kouilou-Niari River), at least one from Burundi, UgandaMalawi, Namibia and Zambia, and the species is also listed as a vagrant to Ascension island and Tristan da Cunha. And the first for the Seychelles was seen on 7.5.17. They really do wander about!!

FranklinsGull_rangemap_xenocantoFranklin’s Gull – now known as Leucophaeus pipixcan –  is a widespread colonial breeder on the prairies of northern North America, wintering mainly in coastal regions on the Pacific coast of South America (Colombia – Chile; range map xeno-canto). It’s a regular vagrant to Europe, and stragglers have been recorded as far as Kazakhstan, Australia and New Zealand, even Antarctica.

 

A few references

Baillon, F. & P.J. Dubois, 1992. Nearctic gull species in Senegal and The Gambia. Dutch Birding 14:49-503

Érard, C, Guillou, J.-J. & Mayaud, N., 1984. Sur l’identité spécifique de certains laridés nicheurs au Sénégal. Alauda 52:184-188

www.allaboutbirds.org/guide/Franklins_Gull/lifehistory

 

 

Technopole 29/4: Goélands dominicains & co.

Sortie dominicale de routine au Technopole avant-hier 29/4, avec comme presque toujours quelques observations intéressantes à la clé.

A commencer par ces trois Goélands dominicains (Kelp Gull), espèce rarement observée au Technopole et à Dakar de manière générale : en scannant un groupe de laridés essentiellement composé de Goélands d’Audouin (quelques 85 inds. en tout, un bel effectif pour le site; Audouin’s Gull), un oiseau costaud sort du lot et lorsque j’arrive à voir son bec massif, je peux confirmer qu’il s’agit bien de Larus dominicanus, pas de doute possible cette fois. Un individu adulte ou presque, de taille nettement supérieure aux quelques Goélands bruns (Lesser Black-backed Gull) dans le même groupe, au bec énorme, un manteau bien sombre, et des pattes grises très claires tirant vers le vert. L’iris sombre est conforme à la ssp. vetula (Goéland du Cap, Cape Gull). A côté de lui se tiennent deux immatures avec la même structure et des pattes de la même couleur que l’adulte, soit trois Dominicains en tout. Les deux jeunes ont un âge similaire, ayant un plumage de type “2e cycle”, donc dans ce cas précis ce seraient des oiseaux nés en 2016. A part la taille et la forme du bec, la couleur des pattes est diagnostique et permet de rapidement repérer l’espèce au milieu de groupes de Goélands bruns, qui ont des pattes jaunes (adultes et subadultes) ou roses (immatures). Les trois oiseaux sont visibles sur la photo ci-dessous.

Pour plus d’infos sur l’identification des Goélands dominicains, voir notamment cet article de Jiguet et al. paru dans Birding World (2002), et aussi ici pour ce qui est des oiseaux de premier cycle.

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Audouin’s, Lesser Black-backed & Kelp Gulls / Goélands d’Audouin, brun & dominicain

 

Clive Barlow et Tim Dodman se sont penchés sur la population ouest-africaine, dont le petit noyau se trouve dans le delta du Saloum où l’espèce niche de manière régulière depuis 1980 au moins, lorsqu’un couple présumé mixte G. dominicain x G. brun fut trouvé sur l’Ile aux Oiseaux. Par la suite, des nidifications par des couples purs sont prouvées dès 1983 par Erard et al. Quelques individus fréquentent régulièrement la Gambie et la Mauritanie, et s’y reproduisent parfois, peut-etre aussi en Guinée-Bissau? Et avec l’intérêt grandissant que portent les ornithos européens au Sahara occidental – ou Sahara atlantique marocain, selon quel point de vue politique on adopte! – l’espèce est vue plus ou moins régulièrement en très petits effectifs plus au nord sur le continent, et il y a même quelques observations récentes au Portugal et en France. Clive et Tim émettent l’hypothèse que notre petite population isolée soit établie par quelques oiseaux égarés depuis l’Afrique australe (Afrique du Sud / Namibie), et que cette population soit maintenant autonome sans qu’il n’y ait de mouvements réguliers entres les populations australes et celle d’Afrique de l’Ouest. Il y aurait ainsi entre 20 et 50 couples dans la région. Une étude génétique est en cours ou du moins est-elle prévue, sauf erreur.

KelpGull_Technopole_20180429_IMG_1822 (2)

Kelp Gull / Goéland dominicain

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Kelp Gull / Goéland dominicain ad. & imm. (même oiseau que sur la photo précédente

 

En région dakaroise, ce goéland hautement côtier est assez régulièrement signalée par des observateurs de passage, mais je ne suis pas sûr que toutes les observations soient réellement fiables… D’après mes propres données de ces trois dernières années le Goéland dominicain est très peu fréquent. Cela dit, je ne suis pas un larophile et si je faisais plus attention à ce groupe difficile que sont les grands goélands, j’en verrais probablement plus souvent!

Ainsi, Niklas Holmström et collègues en signalent pas moins de 20 entre le 13 et le 27/10/03 devant Ngor, mais un seul entre le 3 et le 16/10/05. Une équipe danoise en compte même 57 en « en migration vers le sud » du 22 au 29/10/04 – vraiment étonnant vu que l’espèce n’est présente qu’en très faibles effectifs plus au nord, et qu’en plus ils ne signalent aucun Goéland brun alors que c’est l’espèce dominante à cette période. En 2010, on passe à des effectifs plus raisonnables me semble-t-il, avec trois individus entre le 30/9 et le 8/10 (R. Lebrun) et autant du 25 au 31/10/10 (P. Crouzier & co.). Plus récemment, un Goeland dominicain est rapporté le 24/2 de Ngor par un groupe de naturalistes belges.

Pour ma part, ma seule autre observation au Technopole datait du 6/8/17, d’un immature que j’avais identifié comme dominicain et dont je reprends une des photos floues ci-dessous (l’autre est ) – commentaires bienvenus! Puis avec Manuel en février dernier on a également soupçonné un dominicain, mais trop loin et pas de photos pour confirmer l’identité de l’oiseau. Idem les 11 et 30/8/17 lorsque des probables dominicains passent devant Ngor.

KelpGull_Technopole_20170806_IMG_3621

Probable Kelp Gull / Goéland dominicain (6/8/17)

 

Autre observation intéressante, celle d’un probable Heron « pâle », la sous-espèce monicae du Héron cendré qui ne niche qu’au Banc d’Arguin et peut-être ailleurs sur les côtes en Mauritanie et que certains considèrent même comme une espèce à part entière (“Pallid” or “Mauritanian” Heron). L’aspect très clair était frappant, et malgré la distance on arrive à bien voir les petites stries noires, fines et courtes, sur le cou qui comme le reste des parties inferieures parait presque aussi blanc que la Grande Aigrette. Le manteau était d’un gris pâle à l’exception d’une tache plus sombre à « l’épaule ». Il y a juste le dessin de la tête qui peut sembler un peu top contrasté pour un monicae classique, mais en regardant de près les quelques photos d’oiseaux mauritaniens cela semble encore rentrer dans la normale pour cette sous-espèce. Pour compliquer la chose, il y aurait des oiseaux intermediaires, et peut-être que c’est donc aussi le cas pour notre oiseau du Technopole (visibement un adulte nuptial). Bien entendu je suis preneur d’autres avis!

GreyHeron-monicae_Technopole_20180429_IMG_1851

Grey Heron / Heron cendré ssp. monicae (?)

 

Il doit s’agir d’un des ardéidés les plus rares au monde, la population totale ne comptant que quelques milliers d’individus, avec une aire de répartition très restreinte. Si c’est bien un mauritanien, alors il s’agirait de ma première observation d’un oiseau manifestement rare à Dakar. Ces derniers mois il y a eu au moins deux autres observations dans la région : un le 13/2 au parc de Hann (Gottlieb Dandliker, Cyril Schönbächler; photo ci-dessous) et un le 24/2 aux Iles de la Madeleine (M. Demeulemeester et al.). Monicae est plus fréquente en hiver dans les zones côtières du nord du pays, notamment autour de la Langue de Barbarie et Saint-Louis, mais même là le taxon reste d’observation plutôt aléatoire. Les observations d’Ornithondar permettent d’en savoir plus sur le taxon dans le Bas-Delta, et de comparer les photos avec l’oiseau du Technopole: articles bien instructifs ici et .

Tout cela pour dire qu’en gros, aussi bien l’identification que le statut et la distribution au Sénégal restent encore à préciser! On trouvera quelques infos résumées sur la page dédiée au Héron cendré sur le site du groupe HeronConservation.

PallidHeron monicae - Parc de Hann - 20180213 - G Dandliker

Grey Heron / Heron cendré ssp. monicae, Parc de Hann 13/2/18 (G. Dandliker)

 

Troisième espèce inattendue, vue par chance alors que j’étais en train de quitter le site : six Bengalis zébrés (Zebra [Orange-breasted] Waxbill). Ce sympathique petits passereau avait été vu pour la première fois au Technopole en janvier-mars 2017, et depuis j’ai pu en voir également à Yène, plus précisément le 1er janvier dernier. On peut donc supposer que ce nicheur du Bas-Delta sénégalais et du Saloum soit un erratique plus ou moins régulier dans la région dakaroise.

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Zebra Waxbill / Bengali zébré

 

Pour le reste, il y a de nouveau un petit groupe de Flamants roses (10 ind.), les premiers poussins d’Echasses blanches – juste trois pour le moment, déjà vus le 21/4 – et plusieurs adultes en train de couver; également un poussin de Vanneau éperonné; quelques Bécasseaux variables et surtout une bonne présence de Sanderlings (+150) et de Sternes caugeks notamment; une Hirondelle de rivage retardataire; et toujours quelques Spatules blanches et d’Afrique (Greater Flamingo, Black-winged Stilt, Spur-winged Lapwing, Dunlin, Sanderling, Sandwich Tern, Sand Martin, Eurasian & African Spoonbill). Sinon assez peu de limicoles, la plupart des chevaliers, pluviers, combattants et autres bécasseaux étant de retour en Europe maintenant: on attend déjà leur retour, d’ici deux mois à peine pour les avant-coureurs. Par contre, il y a toujours autant de Bihoreaux gris: une bonne trentaine (Black-crowned Night-Heron).

Le Souimanga cuivré est vu à chaque sortie en ce moment, et la semaine passée il y avait également un superbe mâle de Souimanga éclatant, photo ci-dessous (Copper & Splendid Sunbird).

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Splendid Sunbird / Souimanga éclatant

 

 

Technople 8/4: American Golden Plover again, and Baird’s vs. White-rumped Sandpiper

Routine Technopole visit this morning, with a a few good birds to report and (most importantly) a correction to be made.

With water levels now very low, most waders, gulls and terns are now concentrated in the SW part of the main lake and along its northern edge. After an initial scan from behind the fishermen’s cabin (African Spoonbill, Yellow-billed Stork), I made my way to where most of the smaller waders were feeding, and soon located an American Golden Plover, an adult moulting into breeding plumage. The contrasted plumage, long wings (clearly extending beyond the tail tip), and smaller and more slender build than Grey Plover made the identification pretty straightforward, even at long range as in the record shot below:

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American Golden Plover & Grey Plovers / Pluviers bronzé & argentés

 

This is now the fourth record in three years at Technopole, all of which have been in spring (8/4-21/5) and all birds so far have stayed for several days or weeks, so it’s likely that this one will hang around a bit longer. And going by last year’s series of observations, it may well be joined by other AGP’s in coming weeks – no doubt are there several birds wintering in (West) Africa each year, and some of these will pass through the Dakar penninsula. Previous Technopole records were in June 2012 (M. van Roomen) and October 2005 (Nillson et al., W. Faveyts) and there’s also an observation from lac Mbeubeusse in March 2013, by Paul Robinson.

The image below is a bit less distant, and clearly shows the dark upperparts speckled with fresh golden mantle feathers, a contrasting white supercilium wrapping around the ear coverts, an “open” face due to pale lores, the thin bill and especially the very long primaries, extending well beyond the tail. Note also the black feathers appearing on the lower breast.

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American Golden Plover / Pluvier bronzé

 

Despite not having relocated the White-rumped Sandpiper during my two previous visits, I still had this bird in the back of my mind, so was pleased to see it again, this time not too far. I was determined to see the white rump as we hadn’t clearly seen it two weeks ago, and as such a slight doubt remained as to whether we could safely rule out Baird’s. It didn’t take long for the bird to fly off, and now I clearly saw the rump: no white!!! This was confirmed when the bird took off a second time. So it was a Baird’s Sandpiper after all… which means we somehow got tricked into believing we saw white on the rump during our initial observation (wishful thinking? a Curlew Sandpiper?), at least that’s assuming that we’re talking about one and the same bird here. It does explain why we felt that several features on the pictures from 25/3 were pro-Baird rather than White-rumped Sandpiper.

So, still no Calidris fuscicollis in Senegal, but we’re pretty happy with Calidris bairdii as well – I’d never seen either species before, and Baird’s has been seen only once before in Senegal, in 1965 (!), though I still need to find out exactly when, where and by whom.

I’ve updated and renamed the original post with some more details.

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Baird’s Sandpiper / Bécasseau de Baird

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Baird’s Sandpiper / Bécasseau de Baird

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Baird’s Sandpiper / Bécasseau de Baird

 

Other than these, there are a couple of Dunlins around, still several Curlew Sandpipers (some now in full breeding plumage), a Spotted Redshank, a couple hundred Common Ringed Plovers, a handful of Sanderling (much less than just over a week ago), a Whimbrel, a Greater Painted-Snipe, etc.

Unlike earlier in the week, I didn’t see any Mediterranean Gulls and the majority of Black-headed and Lesser Black-backed Gulls seem to have left the area by now. The various flocks of terns held Arctic, Common, Caspian, African Royal, Lesser Crested, Sandwich, and Gull-billed Terns! A few Black Terns were flying around (while Roseate and Little Terns were seen in the last few days from Ngor, so that’s almost all regular tern species that are present in Dakar at the moment). A few Eurasian Spoonbills are still around, including one on 1/4 with a white ring “AVLV” from the Camargue program – awaiting details on this bird’s life history.

A Marsh Harrier hunting over the area was probably one of two birds that spent the winter at Technopole, while a kestrel passing through quite high was visibly actively migrating and may well have been a Lesser Kestrel, though not sure.

Still lots of Black-crowned Night-Herons, but with the water levels being so low there aren’t many other herons around, just a few of each of the regular species incl. a few Black Herons. And most of the northern songbirds are gone now, with just a few Yellow Wagtails still around. A pair of Copper Sunbirds was singing and feeding in mangroves not far from the Club House, and has been seen several times in the same area in recent weeks. Also still lots of Sudan Golden Sparrows, while the Black-headed Weavers are now in full breeding plumage and are actively nest-building, and Northern Crombec has been heard singing on most recent visits.

 

 

 

Baird’s Sandpiper – Second Record for Senegal

This post – including its title – was modified on 8/4 after we found what is supposed to be the same bird, and re-identified it as Baird’s Sandpiper rather than White-rumped. 

Last Sunday (25/3), during a routine Technopole visit with Miguel and Antonio, we picked up an odd looking sandpiper among a group of Common Ringed Plovers. Slightly yet noticeable larger than the numerous Little Stints that are currently present, it mainly stood out by its peculiar elongated shape, due to its long wings projecting well beyond the tail tip: could it be a Baird’s or White-rumped Sandpiper?

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Spot the intruder

 

Adrenaline levels rising fast, we quickly tried to get some pictures while studying the bird. When it moved next to a Little Stint, we could clearly see that this was not just another oddly shaped Little Stint but something different, and that it could only be one of those two American waders. It was closer in size to Common Ringed Plover, appearing intermediate between Little Stint and Dunlin. The bird was actively feeding now, probing for food in the mud, and we could see the moderately long and clearly down-curved bill (longer than Little Stint, but shorter than Dunlin), a faintly streaked breast, white underparts, brown-grey upperparts with some new scapulars in an otherwise seemingly very worn plumage. And then that elongated body shape combined with short black legs giving it a silhouette and posture unlike any other calidrids I’d seen thus far.

Then it took off – maybe because of yet another Peregrine blitz – and even though views were brief and quite distant, we each thought that we saw that the rump was mostly white (in fact it’s the uppertail coverts, but “White-uppertailcovered Sandpiper” somehow doesn’t sound quite right). This clinched the id for us even though none of use were fully familiar with the subtle differences between Baird’s and White-rumped, other than the difference in uppertail / rump pattern. I found what was most likely the same bird again on 8/4 (after not seeing it on two previous visits), and this time got much better views including of the rump in flight, which was not white at all: Baird’s Sandpiper!! So not a White-rumped after all… It just shows how one false impression in the field can lead to wrong conclusions, and that you should not take our id’s for granted! And that we still have lots to learn. It also explains why we were confused and felt that the bird looked more like Baird’s, but given that we thought we saw a white rump we could only announce it as a fuscicollis… Maybe when we saw the bird flying, rather in the distance, we were in fact somehow looking at a Curlew Sandpiper.

The distant pictures that follow show an overall fairly brown sandpiper with a diffuse yet clearly demarcated breast band and otherwise white underparts, a feature that actually fits Baird’s more than White-rumped. However, the pictures may be somewhat misleading as the impression in the field was of a slightly paler and colder-toned bird with less uniform plumage – for instance, the upper breast was finely streaked, incl. on the upper flanks. Some mantle feathers had already moulted and the crown was very finely streaked. That said, it appears that White-rumpeds in winter can have quite a bit of variation, some birds being browner overall and (almost) lacking any streaks on the flanks that are otherwise considered to be typical of the species – we found pictures of a few such birds online, e.g. here (IBC) as well as in this useful series of Baird’s and White-rumped from their wintering grounds in Argentina (beware though of the second Baird’s picture, which I think is actually a White-rumped Sand’). We suspect that this was a first-winter bird starting to moult into its first summer plumage, though without better pictures we can’t rule out that it was a full adult.

The bill shape appears subtly different from one picture to another, but the first photograph is probably the most accurate: fairly thick at the base and slightly curved. This fits Baird’s quite well, though many birds appear to have a more straight bill than this one (another reason why we were lead to believe it was White-rumped!).

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Baird’s Sandpiper / Bécasseau de Baird

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Baird’s Sandpiper / Bécasseau de Baird

 

The long wings, crossed like scissors, are quite well visible on this picture, as is the overall “flat” appearance of the species. The whitish supercilium extends well beyond the eye, a pro-fuscicollis feature, but apparently still ok for Baird’s. One may expect the primary projection to be longer, but there again there seems to be quite a bit of individual variation.

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Baird’s Sandpiper / Bécasseau de Baird

 

Unfortunately, the rump can’t quite be seen in this picture:

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A useful discussion on separation of Baird’s and White-rumped Sandpipers, even if it mainly focuses on birds in summer and autumn when most likely to show up in the UK, is to be found here. The European and North American field guides were surprisingly unhelpful when it comes to describing the variation in winter plumage of both species. I thus turned to Faansie Peacock’s excellent field guide to the Waders of Southern Africa, which provides a more relevant Southern Hemisphere perspective on wader identification. Along with the author’s other publications (LBJs, Pipits of Southern Africa) this easily ranks among the finest bird guides that are currently available¹. Let’s just hope that ornithodippiasis doesn’t get the better of him and that he can author many more books.

Anyway.

We moved to the main track as we were hoping to relocate our sandpiper given that it seemingly had landed in the area. After careful scrutiny of the numerous Little Stints, Curlew Sandpipers and Common Ringed Plovers (and finding a Buff-breasted Sandpiper in the process!), we ended up seeing it just as we were about to give up. Even worse pictures followed (distance, heat haze are the usual excuses) and the bird settled down to sleep, so we eventually moved on as we still wanted to check the other side of the main lake (where we saw Short-eared Owl and Copper Sunbird; other good birds at Technopole included an imm. Yellow-billed Stork, African Spoonbill, and Mediterranean Gull).

Here’s a picture from this morning 8/4, where the bill appears less curved and thinner at the end, and it clearly is all black (which all fits Baird’s perfectly):

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Baird’s Sandpiper / Bécasseau de Baird

Baird’s is a rare vagrant to Africa, with just a single claim from Senegal (Dec. 1965 in or near the Djoudj, as per Borrow & Demey, but I could not find the original reference so far), one from The Gambia (Nov. 1976), plus a record from November 1987 in Nouakchott but which was not retained by Isenmann et al. As such it seems that our bird is the first record for the subregion.

White-rumped Sandpiper is equally rare, with most continental records from South Africa during winter. In West Africa, there appear to be just a handful of records: one from Cote d’Ivoire (Oct.-Nov. 1988), and two from Ghana (Dec. 1985 & 2012). Given that it’s relatively frequent in Western Europe in autumn, and that in the Cape Verde and other East Atlantic islands the species is also quite regular, surely they must be pretty much annual visitors to West Africa. More generally, one can only speculate how many American and other vagrants truly pass through Senegal each year.

Both species are long-distance migrants, breeding in the Nearctic tundra, and spending the winter in South America.

The same goes for the Buff-breasted Sandpiper; this bird was likely one of the two that were seen on most visits between 13/1 and 19/2, but then again it may also have been a new bird that was just passing through.

 

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Buff-breasted Sandpiper / Bécasseau rousset

 

So now we just need to find a proper Calidris fuscicollis, and finally add it to the national list.

In fact, how many bird species have been sighted in Senegal thus far? We’ll try to answer that question in a future blog post!

 

¹ Peacock, F. 2016. Chamberlain’s Waders. The Definitive Guide to Southern Africa’s Shorebirds. 256 p., Pavo Publishing. See the author’s website for more info. 

 

New Trip Report – the North, Saloum, Wassadou & Dakar

It’s always a pleasure to read good trip reports by birders who visit Senegal. More and more visitors now report their sightings through eBird or Observation.org, but few go through the effort of writing up their notes – despite best intentions, as I can sadly testify to myself.

Too many birds, not enough time, right?

A small Danish team visited Senegal last November, and I happened to meet them while seawatching at the Calao at the start of their visit, together with guide Carlos who expertly showed them a great deal of excellent birds – and then again towards the tail end when we briefly met up in Toubacouta. I recently received their trip report, one of the few good ones that were published on Senegal recently. There are useful sections on travel arrangements, weather, timing, pets, and resources (many thanks for mentioning this site!). And very importantly, a brief review of key places visited during the trip: Dakar, Trois-Marigots & Djoudj, Richard Toll, Kousmar, Wassadou & the Niokolo-Koba National Park, Toubacouta & Delta du Saloum, and finally Popenguine. Information on key species is provided along with some info on accommodation and access, and almost all are illustrated with pictures showing local habitats. Next up are species lists by site, followed by a comprehensive list of bird and mammal species seen.

Pretty much all the “specials” were found, both up North and in the Saloum and Niokolo-Koba areas. Also a few less expected birds, such as a high count of Stone-Curlews at Richard Toll (90! with 12 more at Trois-Marigots), a slightly out-of-range African Hobby at Trois-Marigots, a couple of Temminck’s Stints, Shining-blue Kingfisher at Wassadou (though apparently it’s quite regular there at the moment), and an Aquatic Warbler seen during the boat tour to the Djoudj pelican colony (they’re present of course, but seeing one is rare!). And a good breeding record of Fulvous Babbler – apparently one of the few confirmed in the country – with a bird on the nest at Richard Toll.

Oh and I almost forgot – the report is stuffed with brilliant pictures including many of the country’s iconic birds, such as this pair of perfect Swallow-tailed Bee-eaters seen near Toubacouta, or the stunning Cricket Warbler from Richard Toll further down (all pictures in this post by Morten Heegaard, Stig Jensen & Jon Lehmberg).

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Swallow-tailed Bee-eater / Guêpier à queue d’arronde

 

And make sure to read through to the very end, where you’ll find an enjoyable bonus section on the raptor roost at Ile de Kousmar near Kaolack. To quote the authors, “Why a lot more birders aren’t visiting this roost is a total mystery to us, and that some are even spending a night in Kaolack without coming here is simply beyond belief”. I, for one, am ashamed to say I have not made it to Kousmar yet: next winter, sans faute.

 

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White-crested Helmet-Shrike / Bagadais casqué

 

The report can be downloaded directly from here (PDF, 5 MB), or from the Cloudbirders site, which contains a number of other good trip reports on Senegal, many of which are from tours combined with Gambia. Many are fairly dull species lists, but among the more recent ones this report by Birdquest from February 2017 (Podor, Dindefelo, Wassadou, Saloum etc.) is worth a read for those planning a trip to Senegal even if it fails to provide any useful information on where to find the most wanted birds (and there are a few errors as well, e.g. Mali Firefinch is not restricted to Kedougou in Senegal, and Marbled Teal is very much a regular visitor to Djoudj). I guess that’s one of the differences between commercial tours that rush from one place to another (imagine spending just a single day in Dindefelo?!) and a bunch of passionate friends who are keen to share their explorations. Dieuredieuf, Morten, Stig & Jon!

 

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Cricket Warbler / Prinia à front écailleux

 

And since we’re talking trip reports – a really enjoyable report in very much a different style is this recent one from The Gambia: BIRDBLOG GAMBIA 2018. Woodsmoke…dust…many birds!

“The ironically named Singing Cisticola showed well, but sang very, very badly, however Scimitarbill and Grasshopper Buzzard rebalanced the cool scale”

Proof that birding trip reports don’t have to be boring reads – highly recommend it, I had a real good laugh!

 

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Zebra Waxbill / Bengali zébré