Circus cyaneus
The Hen Harrier, *Circus cyaneus*, is a graceful, medium-sized raptor renowned for its distinctive buoyant, low-level flight over open landscapes. Males are striking with their pale grey plumage, crisp white undersides, and contrasting black wingtips, earning them the moniker "Grey Ghost." Females and juveniles, in stark contrast, are brown-streaked with a prominent white rump and dark bands on the tail, making sexual dimorphism a key identification feature. Averaging 43-50 cm (17-20 inches) ...
Found primarily in extensive open country, including grasslands, moors, bogs, heathlands, prairies, and open wetlands, from sea level up to moderate elevations in mountainous regions.
Feeds predominantly on small mammals, especially voles and mice, and small birds, captured by low-level aerial hunting followed by a sudden pounce or chase.
Hen Harriers are diurnal hunters, often performing a distinctive low, quartering flight over open terrain, using both sharp eyesight and enhanced hearing (aided by their facial disc) to detect prey. During the breeding season, males engage in spectacular "sky-dancing" courtship displays, involvin...
The Hen Harrier (*Circus cyaneus*) has a wide Holarctic distribution. Its breeding range spans across northern Eurasia, from Scandinavia and the British Isles eastward through Russia and Siberia to the Pacific coast. In North America, its close relative, the Northern Harrier (*Circus hudsonius*),...
Least Concern
- The male Hen Harrier is often called the "Grey Ghost" due to its pale plumage and silent, low-level flight. - Their spectacular "sky-dancing" courtship display, performed by the male, involves a series of aerial acrobatics including deep undulations, dives, and rolls. - Hen Harriers possess an ...