Alaska field notes, v4437
Page 101
Image from the Biodiversity Heritage Library. Contributed by Museum of Vertebrate Zoology, University of California, Berkeley. | www.biodiversitylibrary.org
Transcription
Journal Deadhorse Airport, Prudhoe Bay, W. Slope, Alaska 22 July (cut) and then headed counter clockwise along the lake. For the 1st third of this wild gyration we were in low Carex marsh - saturated or standing 120., extensive lakeside stuff. Not even any phalaropes. But one juvenile - recently fledged (2-3 days) - Calidris himantopus - putting this bird among the definite local breeders. Found another juvenile C.h. when 300m, even more recently fledged. Along this periphery we did come across juvenile pugilla in regular low number (1-2 every 300-500 m). As we cut S along the far side of the lake the wind rose, or rather, the tundra ~ 50 from the wet edge of emergent vegetation rose to a slight sloping rain. Began picking up a few phalaropes, and then the turners EXPLODED w/ a flock of mixed shorebirds using the SW margin of the lake + its surrounding habitat. 15-20 juvenile C. pugilla (mortality), 5 C. alpina, 30+ C. melanotos - almost all 4, juvenile + 1st Plu. fuligula Calidris BRUODY LIMNODROMUS SCOPACEUS. The C. melanotos adults + juveniles were also there. The flock spread over 100-200 m on the SW side of the lake - i.e. the downwind side. All its turn for another general review of the Prudhoe avifauna, covering the period 18 July-22 July. Gavia arctica - common water over oilfields on larger ponds/lakes. Uses small islands. Not quite close to road system. Pond depth to be deeper than G. stellula (see below) Gavia stellula - common water along road to West Dock + on Spain Road in a few places. not inland. one large pond w/ Arctophila margin, emergent grasses. Olor colimonum - rare meter at best. need to learn what distinct Olor has determined Branta canadensis - many pairs w/ broods seen along larger lakes shores on Spain Road Branta bernicla nigricans - several groups seen along larger lakes on Spain Road / woods. adults also out along West Dock road Anser alliformis - few pairs seen, three deleted from brood - lowland lake margin Anser acuta - violated 49 flying around, usually w/ others Clangula hyemalis - a few still seen on tundra ponds. hundreds in nearshore + offshore Chukchi in large flocks. 70+ and 99. Melanitta perspicillata - a few individuals seen scattered in Clangula flocks offshore Aythya marila - a few offshore in Clangula flocks. Somateria spectabilis - scattered 49 on tundra lowland ponds, bordering large lakes