Argentina (B), Bolivia (B), Brazil (NB), Chile (B), Paraguay (B), Peru (B), Uruguay (NB).
Vagrant to Ecuador, Falkland Islands (Malvinas).
Central Peru southwards through Andes to Tierra del Fuego; extends eastwards to southern Brazil and Uruguay.
 
Rarity Status
Currently this species is not classified as a rarity in this country OR information has not been updated.
Population
Estimated population is 200,000 (2010) and decreasing.
Status NT
Degradation of breeding sites through excessive water extraction, mining, hunting and egg-collection are the main threats.
For more information see BirdLife International Species Factsheet.