Plectrophenax hyperboreus
The McKay's Bunting (Plectrophenax hyperboreus) is a striking arctic songbird, renowned for its strikingly white plumage and highly restricted range. Males in breeding plumage are almost entirely pure white, with prominent black primary and secondary wing feathers that provide a sharp contrast, while females and non-breeding males exhibit more subdued white coloration with some buffy streaking. Measuring 15-17 cm (6-7 inches) in length, with a wingspan of 28-32 cm (11-12.5 inches) and weighin...
This species primarily inhabits barren, rocky arctic coastal tundra on isolated islands during the breeding season, preferring gravelly shores and sparse vegetation. In winter, it moves to similar open coastal areas, often foraging on beaches and tundra fringes.
During the breeding season, their diet consists primarily of small insects, including flies, beetles, and spiders, supplemented by seeds of arctic grasses and sedges. In winter, they rely heavily on seeds, especially those found along shorelines and in tundra areas.
McKay's Buntings are diurnal birds, capitalizing on the extended daylight hours of the arctic summer for foraging and nesting, often roosting communally in sheltered locations during winter nights. They are primarily ground foragers, employing a methodical walk-and-peck technique to glean seeds a...
The McKay's Bunting possesses an extremely restricted geographic distribution, making it a highly specialized North American endemic. Its primary breeding grounds are confined almost exclusively to St. Matthew Island and Hall Island, two remote, treeless islands located in the central Bering Sea,...
Data Deficient
- McKay's Bunting is one of North America's rarest and most range-restricted songbirds, breeding almost exclusively on two remote Bering Sea islands. - Its plumage is among the whitest of any bird, offering superb camouflage against the snowy and icy arctic landscape. - It is closely related to a...