French: Épervier brun German: Eckschwanzsperber Spanish: Gavilán americano
Santo Domingo, Hispaniola
Subspecies and Distribution
A. s. perobscurus
Snyder, 1938 – W Canada (Queen Charlotte Is; possibly also mainland coast of British Columbia); winters S to California.
A. s. velox
(A. Wilson, 1812) – Alaska and Canada E to Newfoundland, S in USA to California, Arizona and New Mexico and, in E, to Alabama; winters S to Panama.
A. s. suttoni
van Rossem, 1939 – N & C Mexico (perhaps extreme S New Mexico, in S USA) S locally to Michoacán and W Veracruz.
A. s. madrensis
Storer, 1952 – Guerrero and W Oaxaca (S Mexico).
A. s. fringilloides
Vigors, 1827 – Cuba.
A. s. striatus
Vieillot, 1808 – Sharp-shinned Hawk – Hispaniola (in both Haiti and Dominican Republic).
A. s. venator
Wetmore, 1914 – Puerto Rico.
A. s. chionogaster
(Kaup, 1852) – White-breasted Hawk – highlands from S Mexico (SE Oaxaca, Chiapas) through Guatemala, Honduras and El Salvador to NW Nicaragua.
A. s. ventralis
P. L. Sclater, 1866 – Plain-breasted Hawk – hills and mountains from N & SE Venezuela and Colombia through Ecuador and Peru to W Bolivia (Cochabamba).
A. s. erythronemius
(Kaup, 1850) – Rufous-thighed Hawk – E Brazil (S from Bahia) to Uruguay, and SE Bolivia (Santa Cruz to Tarija) through Chaco of Paraguay to N Argentina (S to San Luis and Buenos Aires).
23–35 cm; male 82–125 g, female 144–218 g (velox), male 94·9 g, female 171 g (venator), female 224–242 g (ventralis... read more
Two main calls: single chip notes resembling those made by many passerines, and a series of sharp "... read more
Wide variety of forested habitats, depending on region and subspecies, but usually with some... read more
Food and feeding
Highly specialized predator of birds, which typically constitute c. 90% of prey items. Most prey are passerines weighing < 40 g, but... read more
In USA and Canada, usually the last accipiter to arrive on nesting grounds. Nest initiation likely timed to match availability of young... read more
Race velox migratory, especially from taiga, moving S to wintering sites from mainland USA... read more
Status and conservation
Not globally threatened (Least Concern). CITES II. Race velox negatively affected by organochlorine chemicals in 1960s and 1970s. Tissue samples from E USA in early... read more
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