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Pallid harrier – Circus macrourus

Pallid harrierCircus macrourus
is a migratory bird of prey of the harrier family. The scientific name is derived from the Ancient Greek. Circus is from kirkos, referring to a bird of prey named for its circling flight (kirkos, “circle”), probably the hen harrier and macrourus is “long-tailed”, from makros, “long” and -ouros “-tailed”.

It breeds in southern parts of eastern Europe and central Asia (such as Iran) and winters mainly in India and southeast Asia. It is a very rare vagrant to Great Britain and western Europe, although remarkably a juvenile wintered in Norfolk in the winter of 2002/2003. In 2017 a pair of pallid harriers nested in a barley field in the Netherlands; they raised four chicks.

This medium-sized raptor breeds on open plains, bogs and heathland. In winter it is a bird of open country.

This is a typical harrier, with long wings held in a shallow V in its low flight. It also resembles other harriers in having distinct male and female plumages. Adults measure 40–48 cm (16–19 in) long with a wingspan of 95–120 cm (37–47 in). Males weigh 315 g (11.1 oz) while the slightly larger females weigh 445 g (15.7 oz). The male is whitish grey above and white below, with narrow black wingtips. It differs from the hen harrier in its smaller size, narrower wings, paler colour, and different wing tip pattern. The female is brown above with white upper tail coverts, hence females and the similar juveniles are often called “ringtails”. Her underparts are buff streaked with brown. It is best distinguished from the female hen harrier on structure. It is very similar to the female Montagu’s harrier, but has darker and more uniform secondaries from below.

It sounds like this
Recording by Albert Lastukhin from Xeno canto