Gabriel Rojo / Lesser yellow-headed vulture (Cathartes burrovianus ) stretching wings, Ibera Marshes, Corrientes Province, Argentina.

Glenn Bartley/ BIA / Lesser Yellow-headed Vulture (Cathartes burrovianus), Pantanal, Brazil

Ben Cranke / Lesser Yellow-headed Vulture (Cathartes burrovianus) perched on a river bank, Mato Grosso, Pantanal, Brazil. August.

Pete Oxford / Lesser Yellow-headed Vulture (Cathartes burrovianus) flying, Sian Ka'an Biosphere Reserve, Quintana Roo, Mexico

Luiz Claudio Marigo / Lesser Yellow-headed vulture (Cathartes burrovianus) perched in the Caatinga forest at Serra das Almas Natural Reserve, western Ceara State, Brazil.

Gerrit Vyn / Adult Lesser Yellow-headed Vulture (Cathartes burrovianus). Veracruz, Mexico

Gerrit Vyn / Portrait of an adult Lesser Yellow-headed Vulture (Cathartes burrovianus) Autumn, Veracruz, Mexico

Gerrit Vyn / Adult Lesser Yellow-headed Vulture (Cathartes burrovianus) perched on a fence post. Veracruz, Mexico.

Staffan Widstrand / Portrait of Lesser yellow headed vulture (Cathartes burrovianus) perched on fence, Pantanal, Brazil, South America

Staffan Widstrand / Lesser yellow headed vulture {Cathartes burrovianus} head profile. Pantanal Brazil.

Luiz Claudio Marigo / Lesser yellow headed vulture {Cathartes burrovianus} Beni Dept, Bolivia

Staffan Widstrand / Lesser yellow headed vulture flying {Cathartes burrovianus} Brazil.