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Difference between revisions of "Striated Caracara" - BirdForum Opus

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;Phalcoboenus australis
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;[[:category:Phalcoboenus|Phalcoboenus]] australis
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[[Image:Striated Caracara11a.jpg|thumb|550px|right|Photo by Vernon Lundy]]
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[[Image:Striated Caracara11a.jpg|thumb|450px|right|'''Adult.'''<br /> Photo by {{user|Vernon+Lundy|Vernon Lundy}}<br />[[Falkland Islands]] Nov 2006.]]
 
==Identification==
 
==Identification==
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At birth the down is a striking orange or light reddish colour. In its first year it is very dark brown, almost black with brown flecking on neck. Primaries lighter brown. Legs, feet and face light grey, beak grey with tint of blue.
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[[Image:StriatedCaracaraIMG_1227.jpg|thumb|350px|right|'''Juvenile.'''<br /> Photo by {{user|jmorlan|Joseph Morlan}}<br />Carcass Island,[[Falkland Islands]]
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Second year -flecking on neck becomes more obvious. Brown on primaries more rufous. Thin light grey line on top of beak.
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2 March 2018.]]
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Third year - flecking spreads to lower neck and breast. Legs, feet and face tend towards yellowish orange, beak becomes more blue-grey.
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'''1st year (juvenile)'''<br />
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Fourth year - flecking loses brown colouration, becomes light grey. Flags appear reddish-brown. Tail feathers become white-tipped.
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*Dark brownish-black, nape with [[Dictionary G-L#I|iridescent]] brown flecks
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Fifth year - flecking all light grey. Plumage all darker, losing brown highlights. White bars on the tail tip. Distinctly yellow to orange legs and feet. Face orange or salmon pink, beak clearly blue-grey.
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*Tail with gold sheen
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After that, the flecking becomes whiter with age.
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*Paler [[Topography#Wings|primaries]] with bluish trim
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*Pale grey legs, feet and [[Topography#Heads|cere]]
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*Bill mostly dark<br />
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'''2nd year<br />'''
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* Primaries more rufous
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* Pale [[Topography#Beaks|culmen]]<br />
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'''3rd year <br />'''
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* Buff-brown streaking extends to breast
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* Legs, feet and cere yellow-orange
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* Bill paler, blue-gray<br />
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'''4th year <br />'''
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* Streaks grayish, less brown
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* Thigh feathers rufous
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* Tail white tipped<br />
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'''5th year <br />'''
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* Streaking light gray
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* Tail tip with white bars
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* Legs, feet and cere bright yellow-orange
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* Bill pale blue-gray<br />
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Streaking becomes whiter as age progresses.<sup>[[#References|[1]]]</sup>
  
 
==Distribution==
 
==Distribution==
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[[Falkland Islands]] and [[Tierra del Fuego]]. In decline in both areas and in the Falklands restricted to West Falkland and islands off the west coast, in the south of Falkland Sound and Sea Lion Island and Beauch�ne Islands south of East Falkland. In Tierra del Fuego found on the southern coast and on islands in the south of the Beagle Channel. Resident.  
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[[Falkland Islands]] and [[Tierra del Fuego]]. In decline in both areas and in the Falklands restricted to West Falkland and islands off the west coast, in the south of Falkland Sound and Sea Lion Island and Beauchene Islands south of East Falkland. In Tierra del Fuego found on the southern coast and on islands in the south of the Beagle Channel. Resident.  
 
==Taxonomy==
 
==Taxonomy==
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[[Image:StriatedCaracaraIMG 1630.jpg|thumb|350px|right|'''Second year'''.<br /> Photo by {{user|jmorlan|Joseph Morlan}}<br />Saunders Island,[[Falkland Islands]] 2 March 2018]]
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This is a [[Dictionary_M-S#M|monotypic]] species <sup>[[#References|[2]]][[#References|[4]]]</sup>
  
 
==Habitat==
 
==Habitat==
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Found on shorelines and scavenges in seabird colonies.
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Found on shorelines and often scavenges in seabird colonies.
 
==Behaviour==
 
==Behaviour==
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Primarily a scavenger, it will attack weak or disabled creatures, even ones as large as a sheep. The diet includes land land and marine invertebrates, sometimes using its strong legs and blunt, strong claws to dig for them.
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====Diet====
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Feeds primarily on carrion, adult and young sea birds, particularly penguins; but may also kill newborn lambs or disabled sheep. Their diet includes invertebrates which they can dig out with  their strong claws.
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====Breeding====
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They make a nest from sticks and grass and when possible line it with wool.  The clutch contains up to 4 eggs.
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==Gallery==
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Click on photo for larger image
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<gallery>
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Image:IGP0078.jpg|'''Third year'''<br />Photo by {{user|StrikingSlug|StrikingSlug}}<br />Carcass Island,[[Falkland Islands]] 9 Nov 2009
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Image:EBFStriatedCaracaraLowen966.jpg|'''Juvenile in flight'''<br />Photo by {{user|JCL|James C Lowen}}<br />Carcass Island,[[Falkland Islands]] March 2007
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Image:Striated_Caracara12b.jpg|'''Adult in flight'''<br />Photo by  {{user|Vernon+Lundy|Vernon Lundy}}<br />Sea Lion Island, [[Falkland Islands]] October 2006
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</gallery>
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==References==
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#[http://www.avibirds.com/html/falcons/Striated_Caracara.html Avibirds]
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#Bierregaard, R.O., Jr, Kirwan, G.M. & Garcia, E.F.J. (2018). Striated Caracara (''Phalcoboenus australis''). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (''eds.''). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/53192 on 16 May 2018).
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#BirdLife International. 2016.'' Phalcoboenus australis''. The IUCN Red List of Threatened Species 2016: e.T22696247A93551504. http://dx.doi.org/10.2305/IUCN.UK.2016-3.RLTS.T22696247A93551504.en. Downloaded on 16 May 2018.
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#{{Ref-Clements6thAug17}}#{{Ref-Jaramillo03}}#Wikipedia
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#BF Member observations
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{{ref}}
  
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The nest is built on the ground or on a cliff ledge, and up to 4 eggs are laid.
 
 
==External Links==
 
==External Links==
 
{{GSearch|Phalcoboenus+australis}}
 
{{GSearch|Phalcoboenus+australis}}
  
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[[Category:Birds]][[category:incomplete]]
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[[Category:Birds]][[category:Phalcoboenus]]

Latest revision as of 17:01, 21 May 2018

Phalcoboenus australis
Adult.
Photo by Vernon Lundy
Falkland Islands Nov 2006.

Identification

Juvenile.
Photo by Joseph Morlan
Carcass Island,Falkland Islands 2 March 2018.

1st year (juvenile)

  • Dark brownish-black, nape with iridescent brown flecks
  • Tail with gold sheen
  • Paler primaries with bluish trim
  • Pale grey legs, feet and cere
  • Bill mostly dark

2nd year

  • Primaries more rufous
  • Pale culmen

3rd year

  • Buff-brown streaking extends to breast
  • Legs, feet and cere yellow-orange
  • Bill paler, blue-gray

4th year

  • Streaks grayish, less brown
  • Thigh feathers rufous
  • Tail white tipped

5th year

  • Streaking light gray
  • Tail tip with white bars
  • Legs, feet and cere bright yellow-orange
  • Bill pale blue-gray

Streaking becomes whiter as age progresses.[1]

Distribution

Falkland Islands and Tierra del Fuego. In decline in both areas and in the Falklands restricted to West Falkland and islands off the west coast, in the south of Falkland Sound and Sea Lion Island and Beauchene Islands south of East Falkland. In Tierra del Fuego found on the southern coast and on islands in the south of the Beagle Channel. Resident.

Taxonomy

Second year.
Photo by Joseph Morlan
Saunders Island,Falkland Islands 2 March 2018

This is a monotypic species [2][4]

Habitat

Found on shorelines and often scavenges in seabird colonies.

Behaviour

Diet

Feeds primarily on carrion, adult and young sea birds, particularly penguins; but may also kill newborn lambs or disabled sheep. Their diet includes invertebrates which they can dig out with their strong claws.

Breeding

They make a nest from sticks and grass and when possible line it with wool. The clutch contains up to 4 eggs.

Gallery

Click on photo for larger image

References

  1. Avibirds
  2. Bierregaard, R.O., Jr, Kirwan, G.M. & Garcia, E.F.J. (2018). Striated Caracara (Phalcoboenus australis). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/53192 on 16 May 2018).
  3. BirdLife International. 2016. Phalcoboenus australis. The IUCN Red List of Threatened Species 2016: e.T22696247A93551504. http://dx.doi.org/10.2305/IUCN.UK.2016-3.RLTS.T22696247A93551504.en. Downloaded on 16 May 2018.
  4. Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2017. The eBird/Clements checklist of birds of the world: v2017, with updates to August 2017. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
  5. Jaramillo, A. 2003. Birds of Chile. Princeton & Oxford: Princeton Univ. Press. ISBN 978-0691117409
  6. Wikipedia
  7. BF Member observations

Recommended Citation

External Links

Retrieved from ‘https://www.birdforum.net/wiki/index.php?title=Striated_Caracara&oldid=231166’
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