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The alaska red-tailed hawk was described by Joseph Grinnell (Glacier Bay, Alaska) in 1909 as "always blackest dorsally, and decidedly smaller" than a "large series" of the western red-tailed hawk (B. j. calurus). [3] B. j. alascensis and B. j. calurus were previously considered to be the same subspecies.
[6] [7] Adult B. j. calurus are usually rangier and darker than the eastern red-tailed hawk (B. j. borealis), with pale individuals usually having a richer tawny base color (with occasionally a pale rufous color showing around the chest or neck), typically a heavily streaked breast and belly band, a brownish throat, dark barring on the flanks ...
Pale morph adult ferruginous hawk can show mildly tawny-pink (but never truly rufous) upper tail, and like red-tails tend to have dark markings on underwing-coverts and can have a dark belly band, but compared to red-tailed hawks have a distinctly broader head, their remiges are much whiter looking with very small, dark primary tips, they lack ...
The historic taxonomic status of Harlan's hawk has been quite erratic; sometimes, it has been classified as its own species, B. harlani to the opposite extreme that R. S. Palmer (1988) classified as it (perhaps improbably) as a mere western color morph. Most modern authorities recognize Harlan's hawk as a valid subspecies.
Broad-winged hawk at Isle Royale National Park Sheepshead Sanctuary South Padre Island - Texas Molting feather pattern, only visible in May/June. The broad-winged hawk is a relatively small Buteo, with a body size from 32 to 44 cm (13 to 17 in) in length and weighing 265 to 560 g (9.3 to 19.8 oz).
The pale morph of the closely related but more slender rough-legged species is best distinguished by its darker coloration, with a broad black tail band and a dark band across the chest. The dark morph Rough-leg is more a slaty coloration than the more brownish dark morph ferruginous.
Pale Male (1990 – May 16, 2023), or Palemale, was a red-tailed hawk that resided in and near New York City's Central Park from the 1990s until 2023. Birdwatcher and author Marie Winn gave him his name because of the unusually light coloring of his head.
Krider's hawk or Krider's red-tailed hawk (Buteo jamaicensis kriderii) [1] is a subspecies or color morph of red-tailed hawk. [2] Authorities vary in their treatment of the taxon . [ 3 ] [ 4 ] [ 5 ] It was named after John Krider , the gunsmith from Philadelphia who collected the type specimen, which is preserved in the collection of the ...