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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.
On the pale morph hawk-eagle's underside, the base colour is white to buff overlaid with bold black to dark brown streaking; the streaking tends to be more subtle on abdomen but more obvious on the legs. Beyond the typical pale morph, some subspecies but especially N. c. liminaeetus tend to have a further intermediate and a dark morph. The ...
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 ...
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).
Rufous-morph bird in Hereford, Arizona, on its way to the pampas. Swainson's hawk is a raptor and a medium-sized member of the genus Buteo. It broadly overlaps in size with the red-tailed hawk (B. jamaicensis), a related species found as a breeding resident almost throughout North America. Swainson's hawk is on average a little shorter in ...
The black-and-white hawk-eagle is particularly far smaller and, unlike the ornate hawk-eagle, is not known to take up occasional residency in cloud forests. Also juvenile pale morph crested eagles can appear surprisingly similar in flight to juvenile black-and-chestnut eagles but are conspicuously longer tailed with a stronger barring pattern ...
[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 ...
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 ...