Thryomanes bewickii
– Least Concern
Taxonomy
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Kingdom:
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ANIMALIA
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Phylum:
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CHORDATA
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Class:
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AVES
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Order:
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PASSERIFORMES
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Family:
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TROGLODYTIDAE
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Scientific Name:
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Thryomanes bewickii
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Species Authority:
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(Audubon, 1827)
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Common Name/s:
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Assessment Information
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Red List Category & Criteria:
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LC ver 3.1 (2001)
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Year Assessed:
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2004
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Assessor/s:
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BirdLife International
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Evaluator/s:
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Ekstrom, J. & Butchart, S. (BirdLife International Red List Authority)
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Justification:
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This species has a large range, with an estimated global extent of occurrence of 3,300,000 km². It has a large global population estimated to be 6,000,000 individuals (Rich et al. 2003). Global population trends have not been quantified; there is evidence of a population decline (Sibley 2003a,b), but the species is not believed to approach the thresholds for the population decline criterion of the IUCN Red List (i.e., declining more than 30% in ten years or three generations). For these reasons, the species is evaluated as Least Concern.
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History:
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| 1988 | - | Lower Risk/least concern (BirdLife International 2004) |
| 1994 | - | Lower Risk/least concern (BirdLife International 2004) |
| 2000 | - | Lower Risk/least concern (BirdLife International 2000) |
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Geographic Range
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Range Description:
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This species has a large range, with an estimated global Extent of Occurrence of 3,300,000 km². It has a large global population estimated to be 6,000,000 individuals (Rich et al. 2003). Global population trends have not been quantified; there is evidence of a population decline (Sibley 2003a,b), but the species is not believed to approach the thresholds for the population decline criterion of the IUCN Red List (i.e. declining more than 30% in ten years or three generations). For these reasons, the species is evaluated as Least Concern.
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Countries:
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Native:
Canada; Mexico; United States
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Habitat and Ecology
