Black-crowned Night Heron Nycticorax nycticorax

Brazilian name:
Savacu
Chilean name: Huairavo
Black-crowned Night-heron, Aguas de São Pedro, São Paulo, Brazil, November 2008 - click for larger image Brazil, Chile and Colombia

The Black-crowned Night Heron is a fairly cosmopolitan bird occurring in the Americas, Europe, Asia and Africa. There are 4 subspecies with the nominate occurring in the Old World, N.n. hoactli in North and most of South America, N.n. obscurus in Chile and Argentina and N.n. falklandicus in the Falkland Islands.

Black-crowned Night-heron, Aguas de São Pedro, São Paulo, Brazil, November 2008 - click for larger image Photos 1, 2 and 3 are adult birds of the pale sub-species N. n. hoactli . Photos 6, 7, 9 and 10 are of the sub-species N. n. obscurus which is the darkest race with a grey forehead and grey-brown underparts. Photos 4, 5 and 8 are of juvenile birds.

They feed on a wide variety of prey including fish, frogs, snakes, lizards, insects, shrimps, rodents, bats and birds. Although they can be active during the day they are mainly crepuscular and, as the name suggests, nocturnal.

There are recordings on xeno-canto, a distribution map from NatureServe and additional information available via Avibase.

Black-crowned Night-heron, Aguas de São Pedro, São Paulo, Brazil, November 2008 - click for larger image

Juvenile Black-crowned Night-heron, Aguas de São Pedro, São Paulo, Brazil, November 2008 - click for larger image
Juvenile Black-crowned Night-heron, Aguas de São Pedro, São Paulo, Brazil, November 2008 - click for larger image
Black-crowned Night-heron, Lago Villarica, Chile, November 2005 - click for larger image
Black-crowned Night-heron, Lago Villarica, Chile, November 2005 - click for larger image
Juvenile Black-crowned Night-heron, Joanes, Isla de Marajó, Pará, Brazil, November 2005 - click for larger image
Black-crowned Night-heron, Cachagua, Chile, January 2007 - click for larger image
Black-crowned Night-heron, Cachagua, Chile, January 2007 - click for larger image
Black-crowned Night-heron, Guasco, Cundinamarca, Colombia, April 2012 - click for larger image
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