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Nyctanassa violacea(Linnaeus, 1758)Nyctanassa violacea
Common Name: Yellow-crowned night-heron, Garza-nocturna cabeci amarilla

PhylumClassOrderFamilyGenusSpeciesSubspecies
ChordataAvesCiconiiformesArdeidaeNyctanassaviolaceacaliginis
Habitat
This species can be found near freshwater sources such as marshes and along rivers.

Distribution
Species reported from eastern United States and Mexico to northern Peru and eastern Brazil and the Galapagos Islands.
Natural History Notes
This species is similar to the Black-crowned night-heron but is not as nocturnal.
Characteristics
The total length of this species varies between 24 inches and 26 inches (measured from tip of bill to end of tail). The bill is black and the legs fairly long. The adult plumage is mostly gray, but the head is black and contrasts with a white crown and a white patch behind the eye. In Bocas del Toro, we can observe the migrating race of this heron, which has a heavier bill than the resident race. In flight, we can note that the legs project beyond the tail.
Other Literature
Martinez, C. 2004. Food and niche overlap of the Scarlet Ibis and the Yellow-crowned Night Heron in a tropical mangrove swamp. Waterbirds. 27(1): 1-8. Hutchison, V. J., Lazell, J., et al. 2003. Body sway foraging by a Yellow-crowned Night-Heron. Wilson Bulletin. 115(3): 348-350 Watts, B. D. 1995. Yellow-crowned night-heron (Nyctanassa violacea). Birds of North America. 0(161): 1-24.
In Bocas Del Toro
Museum ReferencesThe Field Museum
LocalityBocas del Toro town
Changuinola
Almirante
Quebrada pastores
Tranquilo Bay: Mangrove
Zapatillas: Cay N°1 & Cay N°2
Loma Partida
Buena Esperanza
Canal-Changuinola: Entrada Canal & Boca Río Changuinola
Isla Colón (Bocas): Y & Bluff
Almirante road
CommentsConservation status according to IUCN 2008 Red list: Least Concern (LC).
It is a resident species.
Compiled by
Lexi Weintraub; Zoe Joly-Lopez
Images
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Nyctanassa violacea & Leucophaeus atricilla
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Adult Nyctanassa violacea
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Map
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Links
Reference
UCN 2008. 2008 IUCN Red List of Threatened Species. www.iucnredlist.org.

Ridgely, Robert. S. and John. A. Gwynne. Jr. 1989. A Guide to the Birds of Panama. Second Edition. Princeton University Press. Princeton, New Jersey. 534 p.

Van Bael, Sunshine A., Bichier, Peter, Ochoa, Isis and Greenberg, Russell. 2007. Bird diversity in cacao farms and forest fragments of western Panama. Biodiversity and Conservation 16: 2245-2256.

Wetmore, A. 1965. The birds of the Republic of Panama. Part 1. Tinamidae (tinamous) to Rynchopidae (skimmers). Smithsonian Miscellaneous Collections 150. Smithsonian Institution, Washington.
Comments
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