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Difference between revisions of "Gray Hawk" - BirdForum Opus

(split of Gray-lined Hawk)
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''aka'' '''Gray Hawk'''.
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[[Image:Grey_hawk_mexico.jpg‎|thumb|550px|right|Photo by gatafrancesca<br />Locality: Huatulco, Oaxaca, [[Mexico]]]]
;Buteo nitidus
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;[[:Category:Buteo|Buteo]] plagiatus
[[Image:Grey-lined_Hawk.jpg|thumb|450px|right|Photo by Glen Tepke<br />Locality: Old Gamboa Road, Panama (race ''costaricensis'').]]
 
''aka Asturina nitida''. Includes ''Buteo plagiatus''/''Asturina plagiata'' (''see Taxonomy'').
 
 
 
 
==Identification==
 
==Identification==
Adults are generally easily recognized by the grey-and-white barred underparts and broadly white-banded black tail.
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Adults are generally easily recognized by the gray-and-white barred underparts and broadly white-banded black tail.
  
 
==Distribution==
 
==Distribution==
''See Taxonomy''
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Found from southern [[Arizona]], [[New Mexico]] and [[Texas]] through [[Mexico]] and [[Central America]] south to [[Costa Rica]] where this form is found in large parts of the Caribbean lowlands and south to at least Jaco on the Pacific side. <br />
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==Taxonomy==
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This is a [[Dictionary_M-S#M|monotypic]] species.<br />
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It was formerly considerd conspecific with [[Gray-lined Hawk]].
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====''Asturina'' vs. ''Buteo''====
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Formerly placed in the monotypic genus ''[[:Category:Asturina|Asturina]]''. Riesing ''et al.'' (2003) presented genetic data indicating that ''Asturina'' is nested within ''Buteo''. This reclassification is supported by virtually all authorities since then: Banks et al. (2006), AOU (2006 supplement), Clements (2007), SACC (2006). The Opus follows in this consensus.
  
 
==Habitat==
 
==Habitat==
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Feeds on a wide range of small animals, mostly reptiles, but also birds, rodents and insects.
 
Feeds on a wide range of small animals, mostly reptiles, but also birds, rodents and insects.
  
[[Image:Grey_hawk_mexico.jpg‎|thumb|350px|right|Photo by gatafrancesca<br />Locality: Huatulco, Oaxaca, Mexico (race ''plagiatus'').]]
 
==Taxonomy==
 
Work by Riesing ''et al.'' (2003) suggest ''Buteo'' is the correct genus, but it is still commonly placed in the genus ''Asturina'', in which case the species name is modified to ''nitida''.
 
 
It is sometimes split into two species:
 
 
* Grey Hawk (''Buteo plagiatus'' aka ''Asturina plagiata''). Monotypic. Found from far S. USA, through Mexico and N. Central America, south to NW Costa Rica. Larger, darker and with more uniform upperparts than the following.
 
 
* Grey-lined Hawk (''Buteo nitidus'' aka ''Asturina nitida''). In addition to the nominate race, it also includes races ''costaricensis'' and ''pallida''. It is found from SW Costa Rica, through Panama and most of lowland N. and C. South America, as far south as SW Ecuador on the Pacific coast and N. Argentina east of the Andes.
 
 
When the two are considered conspecific, the combined species is variably referred to as the Grey Hawk (e.g. by AOU, Clements and Howard & Moore) or the Grey-lined Hawk (e.g. by Gill & Wright).
 
  
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==References==
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#{{Ref-Clements6thOct12}}#{{Ref-GillDonsker12V3.2}}#[http://www.birdforum.net/showthread.php?t=196527 Birdforum thread] discussing the taxonomy of Gray Hawk
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#[http://www.birdforum.net/showthread.php?t=214277 Birdforum thread] discussing AOU proposals including one to split Gray Hawk in two parts
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{{ref}}
 
==External Links==
 
==External Links==
{{GSearch|Buteo+nitidus}}
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{{GSearch|Buteo+plagiatus}}
 
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[[Category:Birds]][[Category:Buteo]]
[[Category:Birds]]
 

Revision as of 08:25, 16 October 2012

Photo by gatafrancesca
Locality: Huatulco, Oaxaca, Mexico
Buteo plagiatus

Identification

Adults are generally easily recognized by the gray-and-white barred underparts and broadly white-banded black tail.

Distribution

Found from southern Arizona, New Mexico and Texas through Mexico and Central America south to Costa Rica where this form is found in large parts of the Caribbean lowlands and south to at least Jaco on the Pacific side.

Taxonomy

This is a monotypic species.
It was formerly considerd conspecific with Gray-lined Hawk.

Asturina vs. Buteo

Formerly placed in the monotypic genus Asturina. Riesing et al. (2003) presented genetic data indicating that Asturina is nested within Buteo. This reclassification is supported by virtually all authorities since then: Banks et al. (2006), AOU (2006 supplement), Clements (2007), SACC (2006). The Opus follows in this consensus.

Habitat

Woodland and forest, but sometimes in more open habitats with scattered trees. Mainly in lowlands, but locally up to 1800 m (5900 ft). Generally fairly common, but rarer in its limited US range.

Behavior

Feeds on a wide range of small animals, mostly reptiles, but also birds, rodents and insects.


References

  1. Clements, J. F., T. S. Schulenberg, M. J. Iliff, B.L. Sullivan, C. L. Wood, and D. Roberson. 2012. The eBird/Clements Checklist of Birds of the World. 6th ed., with updates to October 2012. Ithaca: Cornell Univ. Press. ISBN 978-0801445019. Spreadsheet available at http://www.birds.cornell.edu/clementschecklist/downloadable-clements-checklist
  2. Gill, F and D Donsker (Eds). 2012. IOC World Bird Names (version 3.2). Available at http://www.worldbirdnames.org/.
  3. Birdforum thread discussing the taxonomy of Gray Hawk
  4. Birdforum thread discussing AOU proposals including one to split Gray Hawk in two parts

Recommended Citation

External Links

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