Argentina, Belize, Bolivia, Brazil, Colombia, Costa Rica, Ecuador, El Salvador, French Guiana, Guatemala, Guyana, Honduras, Mexico, Nicaragua, Panama, Paraguay, Peru, Suriname, USA, Venezuela.
Population
Estimated population is 500,000 - 4,999,999 (2010).
Collared Forest Falcon (Micrastur semitorquatus) [XC586364]
by Arthur Gomes from Serra dos Cocais, Valinhos, S\u00e3o Paulo, Brazil (call)
Collared Forest Falcon (Micrastur semitorquatus) [XC771607]
by Geoffrey Monchaux from PRN Barbas-Bremen \/\/ Circuito Turistico Sur Oriente, Pereira, Risaralda, Colombia (?)
Subspecies
Sometimes, especially in past, considered to include Buckley's Forest-falcon (Micrastur buckleyi).
The following 2 subspecies are recognised:
naso (Lesson, R, 1842) - North-central Mexico (Sinaloa to Tamaulipas) south through Central America to northern and western Colombia and Ecuador.
semitorquatus (Vieillot, 1817) - Eastern Colombia east to the Guianas, and south through eastern Peru, northern and eastern Bolivia and Brazil to Paraguay and northern Argentina.