Piro-piro di Baird

Identificazione

Adults have black legs and a short, straight, thin dark bill. They are dark brown on top and mainly white underneath with a black patch on the rump. The head and breast are light brown with dark streaks. In winter plumage, this species is paler brownish gray above. This bird can be difficult to distinguish from other similar tiny shorebirds; these are known collectively as "peeps" or "stints".<p>One of the best identification features is the long wings, which extend beyond the tail when the bird is on the ground. Only the white-rumped sandpiper also shows this, and that bird can be distinguished by its namesake feature.

Tassonomia

Nome scientifico

Calidris bairdii

Autorità

(Coues, 1861)

Ordine

Caradriformi

Famiglia

Scolopacidi

Genere

Calidris

Areale e habitat

Areale riproduttivo

NA, PAL : high Arctic (locally to subarctic) dry tundra: Wrangel I. (n of ne Siberia and e Chukotskiy Pen. (far ne Siberia)), n, c Alaska, n Canada including Arctic islands from Banks to Ellesmere and Baffin is. and nw Greenland

Areale non riproduttivo

w, s SA : inland including montane and coastal from s Peru through Chile and c, s Argentina

Migrazione

Complete migrants

Comportamento

Baird's sandpipers breed in the northern tundra from eastern Siberia to western Greenland. They nest on the ground, usually in dry locations with low vegetation.<p>They are a long-distance migrant, wintering in South America. This species is a rare vagrant to western Europe.<p>Baird's sandpiper might have hybridized with the buff-breasted sandpiper.<p>These birds forage by moving about mudflats, picking up food by sight. They mainly eat insects, also some small crustaceans.

Conservazione

Tendenza della popolazione

stable