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In ornithological study, the great horned owl is often compared to the Eurasian eagle-owl (Bubo bubo), a closely related species, which occupies the same ecological niche in Eurasia despite its notably larger size. The great horned owl is also compared to the red-tailed hawk (Buteo jamaicensis), with which it often shares similar habitat, prey ...
This fossil is from a taxon similar in size to the great horned owl (B. virginianus) or the great grey owl (S. nebulosa). [ 11 ] The Sinclair owl ( Bubo sinclairi ) from Late Pleistocene California may have been a paleosubspecies of the great horned owl, [ 12 ] while the roughly contemporary Bubo insularis of the central and eastern ...
The Phasianidae is the family containing the pheasants and their allies. These are terrestrial birds, variable in size but generally plump, with broad, relatively short wings. Many are gamebirds or have been domesticated as a food source for humans. Wild turkey, Meleagris gallopavo; Common peafowl, Pavo cristatus (I) [note 1] [2]
The great horned owl will appropriate a nest previously occupied by a great blue heron or by a hawk. A screech owl depends upon natural tree cavities in large trees.
The Bald Eagle aviary, which housed Atticus the Bald Eagle, was destroyed Monday, although staff were nearby to jump into action, save the bird and move him to a safe house.
[5] [8] The pharaoh, Indian, and Cape eagle-owls and the great horned owl are all broadly similar in size to each other, but all are considerably smaller than the Eurasian eagle-owl, which averages at least 15–30% larger in linear dimensions and 30–50% larger in body mass than these other related species, possibly as the eagle-owls adapted ...
Among the latter, the great horned owl (Bubo virginianus), in the Americas, and the Eurasian eagle-owl (B. bubo) are noted predators of barn owls. Despite some sources claiming that there is little evidence of predation by great horned owls, one study from Washington found that 10.9% of the local great horned owl's diet was made up of barn owls.
The undigestable portions of prey are regurgitated in the form of pellets as in all owls. Pellets of the Eurasian eagle-owl average around 75 mm × 32 mm (3.0 in × 1.3 in), thus they are around the same size as those of most other large Bubo owls, even the notably smaller great horned owl (B. virginianus).