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Although they are not migratory birds, they are also found from southern Texas and eastern Mexico to the Baja California Peninsula and through Central and South America to central Argentina and Chile. Globally, they are not considered threatened species by the IUCN. [1] On rare occasions the bird can be found far outside its usual range.
A study of red-shouldered hawk home range and habitat use in southern California found average home range of 1.2 square kilometres (0.46 sq mi) and showed fair adaptability to human-altered landscapes, which is important as riparian forest habitat has diminished by 98% from 1850 to 1977 in California's Central Valley. [17]
The swallow-tailed kite was first described as the "swallow-tail hawk" and "accipiter cauda furcata" (forked-tail hawk) by the English naturalist Mark Catesby in 1731. [2] It was given the binomial scientific name Falco forficatus by Carl Linnaeus in the 10th edition of Systema Naturae , published in 1758; [ 3 ] he changed this to Falco ...
On March 31, 2022, Grinnell was found dead in the road in downtown Berkeley. [12] Cause of death was not known, but he may have been hit by a car after being attacked by a rival falcon. [ 13 ] On April 1, 2022, Annie was courted by a new male who quickly established a pair bond with her, leading to a third egg being laid and the entire clutch ...
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The American goshawk (Astur atricapillus) is a species of raptor in the family Accipitridae. It was first described by Alexander Wilson in 1812. The American goshawk was previously considered conspecific with the Eurasian goshawk but was assigned to a separate species in 2023 based on differences in morphology, vocalizations, and genetic divergence. [2]
Many studies have contrasted the diet of Cooper's and sharp-shinned hawk in other areas as well, with the sharp-shinned hawk much more regularly selecting birds weighing under about 28 g (0.99 oz), a fair amount overlap in birds of 28 to 40 g (0.99 to 1.41 oz) and 40 to 75 g (1.4 to 2.6 oz) weight classes but birds over this weight range are ...
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