Summary
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The Blue-winged Teal (Anas discors) is a small dabbling duck from North America.
Description of anas discors
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Het mannetje heeft een okergele buik en het vrouwtje een witte.
Distribution
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North America; from Newfoundland to the Gulf of Mexico
Iucn red list assessment
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Red List CategoryLC
Least Concern
Red List Criteria
Version3.1
Year Assessed2012
Assessor/sBirdLife International
Reviewer/sButchart, S. & Symes, A.
Contributor/sJustificationThis species has an extremely large range, and hence does not approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <20,000 km2 combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). Despite the fact that the population trend appears to be decreasing, the decline is not believed to be sufficiently rapid to approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size is extremely large, and hence does not approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern.
Fuentes y créditos
- (c) Rick Leche, algunos derechos reservados (CC BY-NC-ND),
http://www.flickr.com/photos/64649343@N00/2536608097
- (c) Blake Matheson, algunos derechos reservados (CC BY-NC),
http://farm4.static.flickr.com/3660/3550698506_d89ed06f68.jpg
- MONGO, sin restricciones conocidas de derechos (dominio publico),
https://upload.wikimedia.org/wikipedia/commons/3/33/Blue_winged_teals1c.jpg
- Hollingsworth, John and Karen, sin restricciones conocidas de derechos (dominio publico),
https://www.biolib.cz/IMG/GAL/20824.jpg
- (c) Wikipedia, algunos derechos reservados (CC BY-SA),
http://en.wikipedia.org/wiki/Anas_discors
- (c) Desconocido, algunos derechos reservados (CC BY),
http://eol.org/data_objects/5697513
- (c) WoRMS for SMEBD, algunos derechos reservados (CC BY),
http://eol.org/data_objects/28472429
- (c) International Union for Conservation of Nature and Natural Resources, algunos derechos reservados (CC BY-NC-SA),
http://eol.org/data_objects/27996297
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