Aethia


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Aethia

 

a genus of birds of the family Alcidae of the order Charadriiformes. There are three species: the crested auklet (A. cristatelld), with a body length of about 25 cm; the whiskered auklet (A. pygmaea), measuring about 20 cm long; and the least auklet (A. pusilla), about 19 cm long. Seabirds, they spend all their time except for the mating season over open seas. The Aethia are distributed in the northern parts of the Pacific Ocean. In the USSR they inhabit the islands and coasts of the Bering Sea, the Sea of Okhotsk, and the Chukchi Sea. They nest in large colonies in crevices of cliffs and on rock streams; they feed on small marine invertebrates. In some places they have commercial significance; the meat is used.

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aalge), 3 species of Auklets (Aethia spp.), Red-faced Cormorant (Phalacrocorax urile), and 2 Puffin species (Fratercula spp.).
(42) Substantial variation in assimilation of radioactively labeled wax esters due to age was found in least auklets (Aethia pusilla), with values as high as 99% in chicks but as little as 40% in adults.
columba Auklet (unidentified) * 171 111 Least Auklet Aethia 84 83% 55 pusilla Crested Auklet A.
Crested auklets, Aethia cristatella, are typical monomorphic biparental seabirds, with pairs breeding once per year, sharing equally in incubation (average 37 d) and feeding of the young (approximately 35 d; Knudtson and Byrd 1982).
(18) Ventricular impactions with feathers and litter substrate resulting in death were reported in gentoo penguin chicks (Pygoscelis papua) (19) and broiler chicks, (20) respectively, while ventricular diverticula as a sequela of ventricular foreign bodies were reported in captive parakeet auklets (Aethia psittacula).
furcata) Storm-Petrels; Thick-billed Murres (Uria lomvia); Crested (Aethia cristatella), Whiskered (A.
Gibson and Byrd (2007) identified additional Dovekie locations: (1) in an auklet (Aethia spp.) colony at Kasatochi Island in the western Aleutians; and (2) at Vsevidof Island in the eastern Aleutians.
This distribution is generally similar to the Parakeet Auklet (Aethia psittacula), Crested Auklet (A.
Inuvialuit have started seeing species in areas that are north of their normal range, such as American robins (Turdus migratorius) on Banks Island in the late 1990s, an oriole (Icterus galbula) in Inuvik in December 2000, an auklet (Aethia sp.) on the Tuktoyaktuk Peninsula, and yellow-rumped warblers (Dendroica coronata) on Banks Island in 1999 (Communities et al., 2005).
We observed small numbers of other seabirds in deep waters, including Sabine's gulls (Xema sabini), black-legged kittiwakes (Rissa tridactyla), Arctic terns (Sterna paradisaea), black guillemots (Cepphus grylle), and unidentified auklets (Aethia spp.).
Crested Auklet Aethia cristatella and Least Auklet Aethia pusilla: These planktivorous species were first observed at sea beginning around the second half of May.
Foraging aggregations above stratified water have also been reported in other arctic seabirds preying on copepods, such as dovekies (Mehlum, 1990) and least auklets (Aethia pusilla) (Hunt and Harrison, 1990; Hunt et al., 1990).