Hen Harrier
There are two populations or subspecies of Hen harriers that migrate from the northern latitudes. In India they are not a common species and identification is often mixed up with sightings of Pallid/Montagu’s harriers.
Breeding and migration
In the mildest regions such as France, Great Britain, and the southern US, hen harriers may be present all year. The birds that breed in Eurasia move to southern Europe and southern temperate Asia. The American birds move to Mexico and Central America. In India, they are an uncommon species and are known to winter along the lower Himalayas.
Habitat
Prefer barren Himalayan slopes and grasslands. Found in colder regions.
Diet
Being larger prefers relatively larger birds in comparison to the diet of the other Harriers mentioned earlier. But their diet in India is not known.
Hen Harrier (adult male)
Photo: MV Shreeram
Hen Harrier (male)
Photo: Peter von Bagh, Wikimedia Commons, shared under CC0 1.0 Universal Public Domain Dedication
Note:This bird was pictured in Finland and may belong to the western populations of Circus cyaneus
Hen Harrier (female)
Photo: Rob Zweers, Wikimedia Commons, shared under Creative Commons Attribution 2.0 Generic
Note:This bird was pictured in Netherlands and may belong to the western populations of Circus cyaneus