Eastern Marsh Harrier

The eastern marsh harrier is a marsh harrier, 48–58 cm long with a wingspan of 113–137 cm; like most birds of prey the female is usually larger than the male. The male's plumage is variable: typically the head, breast, back and wing coverts are blackish with pale streaks, the rest of the wing grey with black tips and a white front edge, the tail grey, the rump white and the underparts mostly white. The female is dark brown with buff streaking on the head and underparts. It was previously considered conspecific with the western marsh harrier (Wikipedia, general species account).

It is generally migratory, and its wintering range includes southern China, Taiwan, Korea, southern Japan and Southeast Asia as far south as the Philippines, Borneo and Sumatra. Four to seven eggs are laid and incubated for 33–48 days, and the young fledge after 35–40 days. It is usually silent but has a mewing call, most often given at roosts (Wikipedia, general species account).