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:
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.
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.
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.