Polluela bastarda

Identificación

They are 16–18 cm (6.3–7.1 in) in length, and are similar to the only slightly larger little crake. Baillon's crake has a short straight bill, yellow or green without a red base. Adults have mainly brown upperparts with some white markings, and a blue-grey face and underparts. The rear flanks are barred black and white. They have green legs with long toes, and a short tail which is barred underneath.<p>Immature Baillon's crakes are similar to the adults, but have extensively barred underparts. The downy chicks are black, as with all rails.

Taxonomía

Nombre científico

Zapornia pusilla

Autoridad

(Pallas, 1776)

Orden

Gruiformes

Familia

Rallidae

Género

Zapornia

Distribución y hábitat

Their breeding habitat is sedge beds in Europe, mainly in the east, and across the Palearctic. They used to breed in Great Britain up to the mid-19th century, but the western European population declined through drainage. There has been a recovery in north-western Europe in recent years, with the recolonisation of Germany and the Netherlands, and breeding suspected in Britain; an Irish record in 2012 was the first there since the 1850s. They nest in a dry location in wet sedge bogs, laying 4–8 eggs. This species is migratory, wintering in east Africa and south Asia.<p>It is also a resident breeder in Africa and Australasia. There is a single North American record of this species on Attu Island in September 2000.<p>There are at least five subspecies of Baillon's crake:

Migración

Complete migrants

Comportamiento

These birds probe with their bill in mud or shallow water, also picking up food by sight. They mainly eat insects and aquatic animals.<p>Baillon's crakes are very secretive in the breeding season, and are then mostly heard rather than seen. They are then noisy birds, with a rattling call like that of the edible frog, or perhaps garganey. They can be easier to see on migration or when wintering.

Conservación

Tendencia poblacional

unknown