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Difference between revisions of "White Hawk" - BirdForum Opus

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(genus change (Clements and IOC))
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The sexes are similar, but females are larger and heavier.  Immature birds have extensive black spotting on the upperparts and dark-streaked whitish underparts.  
 
The sexes are similar, but females are larger and heavier.  Immature birds have extensive black spotting on the upperparts and dark-streaked whitish underparts.  
 +
====Variations====
 +
*''ghiesbreghti'': White with black markings on the outer primaries, black sub-terminal tail bar, yellow eyes
 +
*''costaricensis'': Distinct black markings on the wings and tail, brown eyes
 +
*''williaminae'': Wing feathers heavily marked with black,  black streaks on the crown and collar, broader tail band, brown eyes
 
==Distribution==
 
==Distribution==
 
[[Central America|Central]] and [[South America]]<br />
 
[[Central America|Central]] and [[South America]]<br />
 
[[Mexico]], [[Nicaragua]], [[Panama]], [[Honduras]], [[Colombia]], [[Venezuela]] and [[Brazil]].
 
[[Mexico]], [[Nicaragua]], [[Panama]], [[Honduras]], [[Colombia]], [[Venezuela]] and [[Brazil]].
 
==Taxonomy==
 
==Taxonomy==
−
There are four subspecies:<br />
+
Formerly included in the genus ''[[:Category:Leucopternis|Leucopternis]]''.
 +
====Subspecies====
 +
There are four subspecies<sup>[[#References|[1]]]</sup>:
 
*''P. a. ghiesbreghti'':
 
*''P. a. ghiesbreghti'':
−
:*Southern [[Mexico]] to [[Nicaragua]]. White,  black markings on the outer primaries,  black sub-terminal tail bar, yellow eyes.
+
:*Tropical forests of southern [[Mexico]] to [[Guatemala]] and [[Belize]]
 
*''P. a. costaricensis'':
 
*''P. a. costaricensis'':
−
:*[[Honduras]], [[Panama]] and [[Colombia]].  Distinct black markings on the wings and tail, brown eyes.
+
:*[[Honduras]] to [[Panama]] and western [[Colombia]]
 
*''P. a. williaminae'':
 
*''P. a. williaminae'':
−
:*North-western [[Colombia]] and western [[Venezuela]].  Wing feathers heavily marked with black,  black streaks on the crown and collar, broader tail band, brown eyes.
+
:*North-western [[Colombia]] to extreme north-western [[Venezuela]]
−
*''P. a. albicollis'':
+
P. a. albicollis:  
−
:*Northern [[Colombia]], central [[Venezuela]] to [[Brazil]].  Smaller than the northern forms, black wings  with white markings, black tail band extending to base of tail, brown eyes.
+
:*Humid forests of the [[Guianas]] and Amazonian basin winters to [[Trinidad]]
−
Formerly included in the genus ''[[:Category:Leucopternis|Leucopternis]]''.
 
 
==Habitat==
 
==Habitat==
 
Lowland forests and woodland.
 
Lowland forests and woodland.
 
==Behaviour==
 
==Behaviour==
−
The diet includes  reptiles, insects and mammals.
+
====Diet====
−
 
+
Their diet consists of reptiles, insects and mammals.
−
It builds a large stick platform nest in a tree and 1 dark-blotched blue-white egg is laid.
+
====Breeding====
 +
They build a large stick platform nest in a tree and 1 dark-blotched blue-white egg is laid.
 
==References==
 
==References==
−
#Wikipedia
+
#{{Ref-Clements6thAug15}}#Wikipedia
 +
{{ref}}
 
==External Links==
 
==External Links==
−
{{GSearch|Pseudastur+albicollis}}
+
{{GSearch|Hawk+albicollis}}
 
[[Category:Birds]][[Category:Pseudastur]]
 
[[Category:Birds]][[Category:Pseudastur]]

Revision as of 11:15, 18 June 2016

Photo by: Dave B Smith
Trinidad
Pseudastur albicollis

Identification

46-56 cm. White head, body and underwings, black upper wings, very short black tail with a broad white band. The bill is black and the legs are yellow.

The sexes are similar, but females are larger and heavier. Immature birds have extensive black spotting on the upperparts and dark-streaked whitish underparts.

Variations

  • ghiesbreghti: White with black markings on the outer primaries, black sub-terminal tail bar, yellow eyes
  • costaricensis: Distinct black markings on the wings and tail, brown eyes
  • williaminae: Wing feathers heavily marked with black, black streaks on the crown and collar, broader tail band, brown eyes

Distribution

Central and South America
Mexico, Nicaragua, Panama, Honduras, Colombia, Venezuela and Brazil.

Taxonomy

Formerly included in the genus Leucopternis.

Subspecies

There are four subspecies[1]:

  • P. a. ghiesbreghti:
  • P. a. costaricensis:
  • P. a. williaminae:

P. a. albicollis:

Habitat

Lowland forests and woodland.

Behaviour

Diet

Their diet consists of reptiles, insects and mammals.

Breeding

They build a large stick platform nest in a tree and 1 dark-blotched blue-white egg is laid.

References

  1. Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2015. The eBird/Clements checklist of birds of the world: v2015, with updates to August 2015. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
  2. Wikipedia

Recommended Citation

External Links

Retrieved from ‘https://www.birdforum.net/wiki/index.php?title=White_Hawk&oldid=217159’
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