A harrier is any of the several species of diurnal hawks sometimes placed in the subfamily Circinae of the bird of prey family Accipitridae. Harriers characteristically hunt by flying low over open ground, feeding on small mammals, reptiles, or birds.
Scientific name: Circus
Higher classification: Accipitridae
Rank: Subfamily
Order: Accipitriformes
Subfamily: Circinae; Bonaparte, 1838