To examine the winter distribution Black Guillemots, Global Location Sensing (GLS) tags were deployed and recovered on seven individuals at two breeding colonies in Nova Scotia, Canada, and New Brunswick, Canada, during 2017-2018. It is resident in much of its range, but large populations from the high arctic migrate southwards in winter. Unlike most other European auks the black guillemot is typically found in ones and twos, scattered around rocky islets. In winter, it turns white, with black barring on its back, and black wings. The colourisation of the winter plumage gets whiter the further north a particular individual Black Guillemot is found. Little is known about Black Guillemot distribution in Atlantic Canada, particularly in the winter (nonbreeding) season. In summer, the black guillemots is black all over, with a large, white oval patch on each wing. Very similar to Pigeon Guillemot of Pacific Coast, and overlaps with it locally in Alaska. Black Guillemots are one of the only types of bird that breeds on Surtsey, a new volcanic island off of Iceland.
The winter plumage is predominantly white on the head, neck and under-parts, while there are black and white bars across the crown, neck, back and flanks. Surprised to see Black Guillemot in the Swilly today, great to see them catching and eating fish. There are five subspecies of Black Guillemot: 1. A Black Guillemot (Cepphus grille) in winter plumage, at Greenock on the Firth of Clyde. A "Black" Guillemot only in summer, it looks mostly frosty white in winter. The black guillemot or tystie, scientific name Cepphus grylle is a medium-sized seabird of the alcid family, Alcidae, native all through northern Atlantic coasts and North American coasts.It’s resident in a lot of its vary, however, massive populations from the excessive arctic migrate southwards in winter. Photo about Wild Black Guillemot in Winter plumage, in Sovereign Harbour, Eastbourne. In winter, the upperparts are iridescent black, often with black fringes giving a scalloped appearance, and the underparts and rump are white. The black guillemot or tystie (Cepphus grylle) is a medium-sized seabird of the alcid family, Alcidae, native throughout northern Atlantic coasts and eastern North American coasts. It has bright red legs and a red gape. Image of guillemot, mouth, winter - 107897773 The black guillemot's striking black and white plumage and bright red feet make it easy to identify in summer. During winter, many Black Guillemots forage far from shore, at the edge of pack ice or in openings in the ice called polynyas. The forehead, crown, lores, eye line and ear coverts are black with white tips, sometimes the tips are narrow and the head looks black. In the northeast, this bird may be seen swimming and diving around rocky shorelines.
1st winter Black Guillemot (Cepphus grylle) at Lerwick, Shetland, Scotland, on 3rd March 2019. In all plumages, the underwings are plain and dark. Guillemots dispersed from breeding …
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