There are currently four harrier species breeding in Europe, all belonging to the genus Circus. Compared to other raptors that can be seen in Europe, harriers are generally medium-sized raptors.
Harriers are specialized for hunting in open landscapes, where they fly slowly at low height in order to surprise unsuspecting prey out in the open. They feed mostly on smaller prey species, including small rodents, birds, reptiles, and amphibians.
by Markus Berger