Hawks and Eagles (Accipitridae)

Roadside Hawk (Buteo magnirostris) - HBW 2, p. 179

French: Buse à gros bec German: Wegebussard Spanish: Busardo Caminero
Other common names: Insect Hawk, Tropical Broad-winged Hawk, Large-billed Hawk

Taxonomy: Falco magnirostris Gmelin, 1788, Cayenne.
Sometimes placed in genus Rupornis, or alternatively in Asturina. Appears to be closely allied to B. ridgwayi, B. lineatus and B. nitidus, all of which may be more closely tied to Leucopternis than to Buteo. Many more races have been recognized: race griseocauda includes argutus, direptor, xantusi and petersi; race magnirostris includes insidiatrix and ecuadoriensis; race occiduus includes inca; and race pucherani includes gularis. Twelve subspecies recognized... View all taxonomy...

Taxonomy: Falco magnirostris Gmelin, 1788, Cayenne.
Sometimes placed in genus Rupornis, or alternatively in Asturina. Appears to be closely allied to B. ridgwayi, B. lineatus and B. nitidus, all of which may be more closely tied to Leucopternis than to Buteo. Many more races have been recognized: race griseocauda includes argutus, direptor, xantusi and petersi; race magnirostris includes insidiatrix and ecuadoriensis; race occiduus includes inca; and race pucherani includes gularis. Twelve subspecies recognized.

Subspecies and Distribution:

  • griseocauda Ridgway, 1873 - Mexico (S from Colima, Nuevo León and Tamaulipas, except Yucatán and Tabasco) S to NW Costa Rica and W Panama (Chiriquí).
  • conspectus (Peters, 1913) - SE Mexico (Tabasco and Yucatán Peninsula) and N Belize.
  • gracilis (Ridgway, 1885) - Cozumel I and Holbox I, near Yucatán (Mexico).

     See all 12 subspecies
  • griseocauda Ridgway, 1873 - Mexico (S from Colima, Nuevo León and Tamaulipas, except Yucatán and Tabasco) S to NW Costa Rica and W Panama (Chiriquí).
  • conspectus (Peters, 1913) - SE Mexico (Tabasco and Yucatán Peninsula) and N Belize.
  • gracilis (Ridgway, 1885) - Cozumel I and Holbox I, near Yucatán (Mexico).
  • sinushonduri Bond, 1936 - Bonacca I and Ruatan I, off Honduras.
  • petulans van Rossem, 1935 - SW Costa Rica and Pacific slope of W Panama to R Tuira, and adjacent islands.
  • alius (Peters & Griscom, 1929) - San José and San Miguel, in Pearl Is (Gulf of Panama).
  • magnirostris (Gmelin, 1788) - Colombia S to W Ecuador, E to Venezuela and the Guianas, and S to Amazonian Brazil (R Madeira E to Atlantic coast).
  • occiduus (Bangs, 1911) - E Peru, W Brazil (S of Amazon, W of R Madeira) and N Bolivia.
  • saturatus (P. L. Sclater & Salvin, 1876) - Bolivia, through Paraguay and SW Brazil (SW Mato Grosso) to W Argentina (S to La Rioja).
  • nattereri (P. L. Sclater & Salvin, 1869) - NE Brazil S to Bahia.
  • magniplumis (Bertoni, 1901) - S Brazil, N Argentina (Misiones) and adjacent Paraguay.
  • pucherani (J. & E. Verreaux, 1855) - Uruguay and NE Argentina (S to Buenos Aires Province).