What type of prey do Northern Harriers primarily search for by quartering grasslands and marshes?

Answer

Small mammals, small birds, snakes, or frogs

They hunt by flying low to surprise small mammals such as voles, mice, or shrews, as well as small birds, snakes, or frogs concealed in the grass.

What type of prey do Northern Harriers primarily search for by quartering grasslands and marshes?
birdraptorhawkFalconNorthern Harrier