English: Northern Harrier, Hen Harrier, Marsh Hawk
Russian: Полевой лунь
German: Kornweihe
French: Busard Saint-Martin
Mongolian: Саарал хулд, Цагаан элэгт
Japanese: ハイイロチュウヒ(Haiiro-chuhi)

Body Length: 42-50 cm
Wing span: 100-121 cm

Breeding season: May-September

Egg number: 4-6 (occasionally 8)
Egg colour: Blueish-white, rarely blotched with light brown.
Brood: 1 per year

Global Status: Least concern
Regional Status:  Least Concern

Habitat: Open areas in river and lake valleys with reed bed and tall sedge grasses. Males occasionally have 2-3 females but this forces some female in mid-air. On migration, it occurs singly, or in small numbers in open country.

Identification: Recognized as a harrier by long wings and tail, and low flight with wings raised in shallow V when gliding. Separated from Marsh Harrier by plumage, lighter build and flight, from the two narrow-winged species by shorter and more ample ‘hand’ with 5 primary long, and broader ‘arm'.

• Adult ♂: Wing-tips black, underparts white with blue-grey head and breast sharply set off, darkish trailing edge to underwing; upperparts blue-grey with white uppertail-coverts.
• Adult ♀: Upperparts brown with white uppertail-coverts, inner wing with variable yellowish panel; underparts buffish-white, streaked brown.
• Juvenile: Distinguished from adult ♀ by more rufous-yellow underparts with fewer streaks, especially on belly, and more prominent and more rufous panel above on inner wing, not so yellowish and indistinct; pale tips to greater upperwing-coverts.  

Food:  Small rodents, small birds and fledglings of passerines in open areas.