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Difference between revisions of "Harris's Hawk" - BirdForum Opus

(Minor picture placement. References updated)
(Picture of adult subspecies. C/right. References updated)
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[[Image:Harris_Hawk_in_flight_by_destombe.jpg|thumb|450px|right|Adult of US form<br />Photo by {{user|destombe|destombe}}<br />Elfrida, [[Arizona]], [[USA]], December 2006]]
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[[Image:Harris_Hawk_in_flight_by_destombe.jpg|thumb|450px|right|Adult of US form<br />Photo &copy; by {{user|destombe|destombe}}<br />Elfrida, [[Arizona]], [[USA]], December 2006]]
 
'''Includes Bay-winged Hawk'''
 
'''Includes Bay-winged Hawk'''
 
;[[:Category:Parabuteo|Parabuteo]] unicinctus
 
;[[:Category:Parabuteo|Parabuteo]] unicinctus
  
 
==Identification==
 
==Identification==
[[Image:Juvenile-Harris-Hawk2-Oct-13-09_by_Lisa_W.jpg|thumb|300px|right|Juvenile of US form<br />Photo by: {{user|Lisa_W|Lisa W}}<br /> Roger Road Waste Water Treatment Plant, Tucson, [[Arizona]], [[USA]], October 2009]]
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[[Image:Harris s Hawk3.jpg|thumb|350px|right|Subspecies ''unicinctus''<br />Photo &copy; by {{user|Luis+R|Luis R}}<br />Caleu. Santiago Metropolitan Region, [[Chile]], September 2018]]
 
Length 45–59 cm (17¾-23¼ in), WS 107cm (42"), Wt. 900gm (2lb).<br />
 
Length 45–59 cm (17¾-23¼ in), WS 107cm (42"), Wt. 900gm (2lb).<br />
 
Blackish brown plumage with chestnut forewings (above and below) and thighs. The end of the tail and the rump are white, with distinctive black band between.<br />
 
Blackish brown plumage with chestnut forewings (above and below) and thighs. The end of the tail and the rump are white, with distinctive black band between.<br />
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====Subspecies====
 
====Subspecies====
[[Image:Bay-winged_Hawk_juvenile_by_Rodrigo_Reyes.jpg|thumb|300px|right|Juvenile "Bay-winged Hawk"<br />Photo by: {{user|Rodrigo_Reyes|Rodrigo Reyes}}<br /> Location: [[La Campana National Park]], [[Chile]], February 2005]]
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[[Image:Bay-winged_Hawk_juvenile_by_Rodrigo_Reyes.jpg|thumb|300px|right|Juvenile "Bay-winged Hawk"<br />Photo &copy; by {{user|Rodrigo_Reyes|Rodrigo Reyes}}<br /> Location: [[La Campana National Park]], [[Chile]], February 2005]]
 
There are 2 subspecies<sup>[[#References|[1]]]</sup>:
 
There are 2 subspecies<sup>[[#References|[1]]]</sup>:
 
*''P. u. harrisi'':
 
*''P. u. harrisi'':
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An unusual behavior in its family is team hunting; birds will cooperate in taking prey, often taking perches in what seems like a strategic manner to confuse and herd its prey before one of the group strikes.  This allows it to take larger prey such as jackrabbits.  Teams can comprise 2 to 6 individuals.  Other prey includes rodents, lizards, and birds.  
 
An unusual behavior in its family is team hunting; birds will cooperate in taking prey, often taking perches in what seems like a strategic manner to confuse and herd its prey before one of the group strikes.  This allows it to take larger prey such as jackrabbits.  Teams can comprise 2 to 6 individuals.  Other prey includes rodents, lizards, and birds.  
 
====Breeding====
 
====Breeding====
[[Image:Peuco BF 1.jpg|thumb|300px|right|Immature, Ssp ''unicinctus'', '''Bay-winged'''<br />Photo by {{user|Luis+R|Luis R}}<br />Parcela Araguaney. Santiago de [[Chile]], July 2016]]
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They nest in a tree; the clutch consisting of 2–4 eggs which are incubated for 28 days.
They nest in a tree; the clutch consisting of 2–4 eggs which are incubated for 28 days. 
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==Gallery==
 +
Click on photo for larger image
 +
<gallery>
 +
Image:Juvenile-Harris-Hawk2-Oct-13-09_by_Lisa_W.jpg|Juvenile of US form<br />Photo &copy; by {{user|Lisa_W|Lisa W}}<br /> Roger Road Waste Water Treatment Plant, Tucson, [[Arizona]], [[USA]],  October 2009
 +
Image:Peuco BF 1.jpg|Immature, Ssp ''unicinctus'', '''Bay-winged'''<br />Photo &copy; by {{user|Luis+R|Luis R}}<br />Parcela Araguaney. Santiago de [[Chile]], July 2016
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</gallery>
 
==References==
 
==References==
#{{Ref-Clements6thAug16}}#Avibase
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#{{Ref-Clements6thAug18}}#Avibase
 
# [http://www.peregrinefund.org/Explore_Raptors/hawks/harrishk.html Peregrine Fund]
 
# [http://www.peregrinefund.org/Explore_Raptors/hawks/harrishk.html Peregrine Fund]
 
# 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  

Revision as of 19:52, 13 September 2018

Adult of US form
Photo © by destombe
Elfrida, Arizona, USA, December 2006

Includes Bay-winged Hawk

Parabuteo unicinctus

Identification

Subspecies unicinctus
Photo © by Luis R
Caleu. Santiago Metropolitan Region, Chile, September 2018

Length 45–59 cm (17¾-23¼ in), WS 107cm (42"), Wt. 900gm (2lb).
Blackish brown plumage with chestnut forewings (above and below) and thighs. The end of the tail and the rump are white, with distinctive black band between.
Females are typically 10% larger than males. Juveniles are similar in appearance, but have streaking common in this family.

Variations

The southernmost form (Bay-winged Hawk) remains streaked on underside and paler, streaked head even as adult, and is fairly pale on underside as juvenile.

Distribution

Sonoran desert of the southwest USA and Mexico, Baja Penisula, Gulf Coast from central coastline of Texas southward through Mexico to Chile and Argentina. This species is absent from much of eastern South America

Taxonomy

Subspecies

Juvenile "Bay-winged Hawk"
Photo © by Rodrigo Reyes
Location: La Campana National Park, Chile, February 2005

There are 2 subspecies[1]:

  • P. u. harrisi:
  • P. u. unicinctus (Bay-winged Hawk):

An additional subspecies P. u. superior in Baja California, Arizona, Sonora, and Sinaloa is not generally recognised[2].

Habitat

Sparse woodland and semi-desert, as well as marshes.

Behaviour

Diet

An unusual behavior in its family is team hunting; birds will cooperate in taking prey, often taking perches in what seems like a strategic manner to confuse and herd its prey before one of the group strikes. This allows it to take larger prey such as jackrabbits. Teams can comprise 2 to 6 individuals. Other prey includes rodents, lizards, and birds.

Breeding

They nest in a tree; the clutch consisting of 2–4 eggs which are incubated for 28 days.

Gallery

Click on photo for larger image

References

  1. Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2018. The eBird/Clements checklist of birds of the world: v2018. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
  2. Avibase
  3. Peregrine Fund
  4. Restall et al. 2006. Birds of Northern South America. Yale University Press. ISBN 9780300124156
  5. Alvaro Jaramillo. 2003. Birds of Chile. Princeton Field Guides. ISBN 0-691-11740-3
  6. Wikipedia

Recommended Citation

External Links

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