Meaning of ferruginous hawk in English:

ferruginous hawk

noun

  • A large hawk, Buteo regalis, of inland grasslands and shrub steppes in North America, occurring in a pale colour morph (which has rusty brown upperparts) and a dark morph (which is chiefly dark brown).

Origin

Late 19th century; earliest use found in Annual Reports Chief of Engineers to Secretary of War (United States).