Common Potoo (Nyctibius griseus) [XC507183]
by Mauricio \u00c1lvarez-Rebolledo (Colecci\u00f3n de Sonidos Ambientales - Instituto Humboldt) from SFF Iguaque, vereda San Pedro de Iguaque, Centro de visitantes, Colombia (?)
Common Potoo (Nyctibius griseus) [XC472440]
by Brice de la Croix from Esta\u00e7\u00e3o Ecol\u00f3gica de Bananal, Bananal, S\u00e3o Paulo, Brazil (song)
Subspecies
Forms superspecies with Common Potoo (Nyctibius jamaicensis), and are sometimes treated as conspecific, although voices differ greatly. Costa Rican birds, originally all included in single subspecies, costaricensis, now thought to include two species; because costaricensis is currently recognized as a subspecies of Common Potoo (Nyctibius jamaicensis), birds of present species in Costa Rica and elsewhere in northern are referred to adjacent subspecies panamensis, although they possibly represent an unnamed taxon. Invalid subspecies cornutus, recognized by some earlier authors, is now considered synonymous with nominate subspecies, despite proposal for full species status based on geographically limited sample showing subtle differences in voice.
The following 2 subspecies are recognised:
panamensis Ridgway, 1912 - Nicaragua and south-western Costa Rica to northern South America west of Andes, from north-western Venezuela to western Ecuador.
griseus (Gmelin, 1789) - Trinidad and Tobago; east of Andes from Colombia, Venezuela and the Guianas to northern Argentina, northern Uruguay and southern Brazil.