Argentina, Belize, Bolivia, Brazil, Colombia, Costa Rica, Ecuador, El Salvador, French Guiana, Guatemala, Guyana, Honduras, Mexico, Nicaragua, Panama, Paraguay, Peru, Suriname, Uruguay (B), USA, Venezuela.
Population
Estimated population is 500,000 - 4,999,999 (2010).
Roadside Hawk (Rupornis magnirostris) [XC704725]
by JAYRSON ARAUJO DE OLIVEIRA from Reserva do Setor S\u00edtio de Recreio Cara\u00edbas-Goi\u00e2nia, Goi\u00e1s, Bolivia (call)
Roadside Hawk (Rupornis magnirostris) [XC376367]
by Yair Guillermo Molina Mart\u00ednez. from Provincia de Guanacaste, Costa Rica (flight call)
Subspecies
Sometimes placed in genus Rupornis, or alternatively in Asturina. Appears to be closely allied to Ridgway's Hawk (Buteo ridgwayi), Red-shouldered Hawk (Buteo lineatus) and Grey-lined Hawk (Buteo nitidus), all of which may be more closely tied to Leucopternis than to Buteo. Many more subspecies have been recognized: subspecies griseocauda includes argutus, direptor, xantusi and petersi; subspecies magnirostris includes insidiatrix and ecuadoriensis; subspecies occiduus includes inca; and subspecies pucherani includes gularis.
The following 12 subspecies are recognised:
griseocauda (Ridgway, 1874) - Mexico (southern from Colima, Nuevo León and Tamaulipas, except Yucatán and Tabasco) south to north-western Costa Rica and western Panama (Chiriquí).
conspectus Peters, JL, 1913 - South-eastern Mexico (Tabasco and Yucatán Peninsula) and northern Belize.
gracilis Ridgway, 1885 - Cozumel I and Holbox I, near Yucatán (Mexico).
sinushonduri (Bond, J, 1936) - Bonacca I and Ruatan I, off Honduras.
petulans van Rossem, 1935 - South-western Costa Rica and Pacific slope of western Panama to R Tuira, and adjacent islands.
alius Peters, JL & Griscom, 1929 - San José and San Miguel, in Pearl Is (Gulf of Panama).
magnirostris (Gmelin, 1788) - Colombia south to western Ecuador, east to Venezuela and the Guianas, and south to Amazonian Brazil (R Madeira east to Atlantic coast).
occiduus Bangs, 1911 - Eastern Peru, western Brazil (south of Amazon, west of R Madeira) and northern Bolivia.
saturatus (Sclater, PL & Salvin, 1876) - Bolivia, through Paraguay and south-western Brazil (south-western Mato Grosso) to western Argentina (south to La Rioja).
nattereri (Sclater, PL & Salvin, 1869) - North-eastern Brazil south to Bahia.
magniplumis (Bertoni, AW, 1901) - Southern Brazil, northern Argentina (Misiones) and adjacent Paraguay.
pucherani (Verreaux, J & Verreaux, E, 1855) - Uruguay and north-eastern Argentina (south to Buenos Aires Province).
BirdLife International Species Factsheet