m (similar species) |
(including Chilean Hawk) |
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[[Image:BiColored_Hawk_adult_by_Peppershrike77.jpg|thumb|550px|right|Photo by {{user|Peppershrike77|Peppershrike77}}<br />An adult photographed in north east [[Argentina]]]] | [[Image:BiColored_Hawk_adult_by_Peppershrike77.jpg|thumb|550px|right|Photo by {{user|Peppershrike77|Peppershrike77}}<br />An adult photographed in north east [[Argentina]]]] | ||
;[[: Category:Accipiter|Accipiter]] bicolor | ;[[: Category:Accipiter|Accipiter]] bicolor | ||
+ | '''Includes: Chilean Hawk''' | ||
==Identification== | ==Identification== | ||
'''Adult''' birds have dark uppersides, plain gray undersides without any dark markings, and rufous thighs which can easily be hidden under gray belly feathers<sup>[[#References|1]]</sup>, <sup>[[#References|2]]</sup>. <br />'''Juveniles''' are more variable showing undersides between white and rufous and less contrasting thighs, but always expected to have a neck collar similar in color to the underparts<sup>[[#References|3]]</sup>. | '''Adult''' birds have dark uppersides, plain gray undersides without any dark markings, and rufous thighs which can easily be hidden under gray belly feathers<sup>[[#References|1]]</sup>, <sup>[[#References|2]]</sup>. <br />'''Juveniles''' are more variable showing undersides between white and rufous and less contrasting thighs, but always expected to have a neck collar similar in color to the underparts<sup>[[#References|3]]</sup>. | ||
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A thread discussing differences between juveniles of this species and the [[Collared Forest Falcon]] is found [http://www.birdforum.net/showthread.php?t=97858 here].<br /> Also frequently confused with various other [[:Category:Micrastur|Forest Falcons]] and the [[Gray-bellied Goshawk]]. | A thread discussing differences between juveniles of this species and the [[Collared Forest Falcon]] is found [http://www.birdforum.net/showthread.php?t=97858 here].<br /> Also frequently confused with various other [[:Category:Micrastur|Forest Falcons]] and the [[Gray-bellied Goshawk]]. | ||
==Distribution== | ==Distribution== | ||
− | [[Mexico]] to [[Argentina]] and east to the [[Guianas]] and [[Brazil]]. | + | [[Mexico]] to [[Argentina]] and [[Chile]] and east to the [[Guianas]] and [[Brazil]]. |
[[Image:Bicolored_Hawk_by_Firetail.jpg|thumb|400px|right|Photo by {{user|Firetail|Firetail}}<br />A juvenile photographed in [[Costa Rica]]]] | [[Image:Bicolored_Hawk_by_Firetail.jpg|thumb|400px|right|Photo by {{user|Firetail|Firetail}}<br />A juvenile photographed in [[Costa Rica]]]] | ||
==Taxonomy== | ==Taxonomy== | ||
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*''A. b. guttifer'': | *''A. b. guttifer'': | ||
:*[[Bolivia]] to [[Paraguay]], south-western [[Brazil]] (Mato Grosso) and northern [[Argentina]] | :*[[Bolivia]] to [[Paraguay]], south-western [[Brazil]] (Mato Grosso) and northern [[Argentina]] | ||
− | + | '''Bicolored Hawk (Chilean)''' | |
− | + | * ''A. b. chilensis'': | |
+ | :*From central [[Chile]] and [[Argentina]] south to Tierra del Fuego. | ||
+ | The Chilean Hawk is sometimes accepted as full species. | ||
+ | [[Image:Chilean Hawk.jpg|thumb|400px|right|Chilean Hawk<br />Photo by Jan Bisschop<br />Tierra del Fuego, [[Argentina]], February 2004]] | ||
==Habitat== | ==Habitat== | ||
'''Breeds''' in open forest and forest edges. May be found in urban areas at other times. | '''Breeds''' in open forest and forest edges. May be found in urban areas at other times. | ||
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Usually seen flying low to the ground. | Usually seen flying low to the ground. | ||
====Breeding==== | ====Breeding==== | ||
− | It builds a stick nest; 1-3 eggs are laid and are incubated for 35 days; the young fledge 30-36 days later. | + | It builds a stick nest; 1-3 dull light bluish to off-white eggs are laid and are incubated for 35 days; the young fledge 30-36 days later. |
====Diet==== | ====Diet==== | ||
− | The diet includes birds. | + | The diet includes birds, though large insects and rodents are also taken. |
==References== | ==References== | ||
# Restall et al. 2006. Birds of Northern South America. Yale University Press. ISBN 9780300124156 | # Restall et al. 2006. Birds of Northern South America. Yale University Press. ISBN 9780300124156 | ||
# [http://www.birdforum.net/showthread.php?t=129446 Thread] in the Identification forum of Birdforum | # [http://www.birdforum.net/showthread.php?t=129446 Thread] in the Identification forum of Birdforum | ||
# [http://www.birdforum.net/showthread.php?t=97858 Thread] in the Identification forum of Birdforum | # [http://www.birdforum.net/showthread.php?t=97858 Thread] in the Identification forum of Birdforum | ||
− | # | + | # {{Ref-Clements6thDec09}} |
#Jaramillo | #Jaramillo | ||
{{ref}} | {{ref}} |
Revision as of 12:02, 5 April 2010
- Accipiter bicolor
Includes: Chilean Hawk
Identification
Adult birds have dark uppersides, plain gray undersides without any dark markings, and rufous thighs which can easily be hidden under gray belly feathers1, 2.
Juveniles are more variable showing undersides between white and rufous and less contrasting thighs, but always expected to have a neck collar similar in color to the underparts3.
Similar Species
A thread discussing differences between juveniles of this species and the Collared Forest Falcon is found here.
Also frequently confused with various other Forest Falcons and the Gray-bellied Goshawk.
Distribution
Mexico to Argentina and Chile and east to the Guianas and Brazil.
Taxonomy
Subspecies[4]
Bicolored Hawk (Bicolored)
- A. b. fidens:
- Lowlands of southern Mexico (Oaxaca, Veracruz and Yucatán Peninsula)
- A. b. bicolor:
Bicolored Hawk (Spotted)
- A. b. pileatus:
- A. b. guttifer:
Bicolored Hawk (Chilean)
- A. b. chilensis:
The Chilean Hawk is sometimes accepted as full species.
Habitat
Breeds in open forest and forest edges. May be found in urban areas at other times.
Behaviour
Flight
Usually seen flying low to the ground.
Breeding
It builds a stick nest; 1-3 dull light bluish to off-white eggs are laid and are incubated for 35 days; the young fledge 30-36 days later.
Diet
The diet includes birds, though large insects and rodents are also taken.
References
- Restall et al. 2006. Birds of Northern South America. Yale University Press. ISBN 9780300124156
- Thread in the Identification forum of Birdforum
- Thread in the Identification forum of Birdforum
- Clements, JF. 2009. The Clements Checklist of Birds of the World. 6th ed., with updates to December 2009. Ithaca: Cornell Univ. Press. ISBN 978-0801445019.
- Jaramillo
Recommended Citation
- BirdForum Opus contributors. (2024) Bicolored Hawk. In: BirdForum, the forum for wild birds and birding. Retrieved 6 May 2024 from https://www.birdforum.net/opus/Bicolored_Hawk