Buteo regalis
Length: 20-30 in Wingspan: 45-55 in Weight: 2-4 lbs
Identification:
Light overall, especially underneath in flight. Gray streaking on head and barring on wings, with rufous shoulder and thighs.
Distribution:
Range map by Neotropical Birds
Cool Facts:
The Ferruginous Hawk, named for its rust-colored shoulders and thighs, is the largest Buteo hawk in North America, and is outsized worldwide only by the Upland Buzzard of Asia, which may be a relative from the time of the Alaska-Siberia land bridge.
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References:
Bird on the Move 