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Chondrohierax uncinatus

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Taxonomy [top]

Kingdom Phylum Class Order Family
ANIMALIA CHORDATA AVES ACCIPITRIFORMES ACCIPITRIDAE

Scientific Name: Chondrohierax uncinatus
Species Authority: (Temminck, 1822)
Common Name(s):
English Hook-billed Kite
Taxonomic Notes: Chondrohierax uncinatus (Sibley and Monroe 1990, 1993) has been split into C. uncinatus and C. wilsonii following Stotz et al. (1996), contra AOU (1998). Although AOU (1998), along with most other authorities, treat wilsonii as a subspecies of uncinatus, there has recently been a trend towards its recognition as a species (Raffaele et al. 1998, Ferguson-Lees and Christie 2005). Initial enquiry by the BirdLife Taxonomic Working Group suggests that all major sources are incomplete in their presentation of the characters that distinguish wilsonii from uncinatus such that the degree of differentiation is nowhere clear. Pending an urgent full study, it is felt that, on the basis of current understanding, and given the extremely precarious conservation status of wilsonii, the better present course is to maintain wilsonii as a separate species.

Assessment Information [top]

Red List Category & Criteria: Least Concern ver 3.1
Year Published: 2012
Date Assessed: 2012-05-01
Assessor(s): BirdLife International
Reviewer(s): Butchart, S. & Symes, A.
Facilitator/Compiler(s): Ekstrom, J., Butchart, S.
Justification:
This 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 very 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.

Geographic Range [top]

Countries:
Native:
Antigua and Barbuda; Argentina; Barbados; Belize; Bolivia, Plurinational States of; Brazil; Colombia; Costa Rica; Cuba; Dominica; Ecuador; El Salvador; French Guiana; Grenada; Guadeloupe; Guatemala; Guyana; Honduras; Martinique; Mexico; Montserrat; Nicaragua; Panama; Paraguay; Peru; Saint Kitts and Nevis; Saint Lucia; Saint Vincent and the Grenadines; Suriname; Trinidad and Tobago; United States; Venezuela, Bolivarian Republic of
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population Trend: Decreasing

Habitat and Ecology [top]

Systems: Terrestrial

Citation: BirdLife International 2012. Chondrohierax uncinatus. The IUCN Red List of Threatened Species. Version 2014.2. <www.iucnredlist.org>. Downloaded on 26 July 2014.
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