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Difference between revisions of "Whiskered Tern" - BirdForum Opus

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[[Image:Whiskered_Tern.jpg|thumb|550px|right|Photo &copy; by {{user|Dick+Hoogenboom|Dick Hoogenboom}}<br />Photo taken: Lesvos, [[Greece]]]]
 
;[[:Category:Chlidonias|Chlidonias]] hybrida
 
;[[:Category:Chlidonias|Chlidonias]] hybrida
[[Image:Whiskered_Tern.jpg|thumb|550px|right|Photo by {{user|Dick+Hoogenboom|Dick Hoogenboom}}<br />Photo taken: Lesvos, [[Greece]]]]
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==Identification==
 
==Identification==
24-28 cm<br />
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24-28 cm (9½-11 in)<br />
 
'''Adult Summer'''  
 
'''Adult Summer'''  
 
*Black cap
 
*Black cap
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*Lighter greyish above
 
*Lighter greyish above
 
*Red bill
 
*Red bill
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[[Image:17075Whiskered Tern2 copy filtered.jpg|thumb|350px|right|Photo &copy; by {{user|armando+tomas+v|armando tomas v }}<br />Delta Llobregat, Viladecans, Barcelona, [[Spain]], May 2005 ]]
 
'''Adult Winter'''
 
'''Adult Winter'''
 
*Black cap shrinks to leave a finely barred rear crown, with solid black patch behind the eye.
 
*Black cap shrinks to leave a finely barred rear crown, with solid black patch behind the eye.
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*Whitish rump
 
*Whitish rump
 
====Similar Species====
 
====Similar Species====
[[Image:17075Whiskered Tern2 copy filtered.jpg|thumb|350px|right|Photo by {{user|armando+tomas+v|armando tomas v }}<br />Delta Llobregat, Viladecans, Barcelona, [[Spain]], May 2005 ]]
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Summer adults resemble [[Common Tern]]s more than [[Black Tern]]s due to their black and white heads, but the short, broad wings and tails are typical of '[[:Category:Chlidonias|marsh terns]]'. and their underparts are so dark that the white cheeks stand out boldly.
Summer adults resemble [[Common Tern]]s more than [[Black Tern]]s due to their black and white heads, but the short, broad wings and tails are typical of 'marsh terns'. and their underparts are so dark that the white cheeks stand out boldly.
 
  
 
Juveniles  have a dark mantle reminiscent of the saddle  on a [[White-winged Black Tern]]; however, it is  not so dark in the Whiskered Tern. In addition the rump is not as conspicuously white as on a White-winged Black Tern and the wings of a Whiskered Tern are a more uniform grey.
 
Juveniles  have a dark mantle reminiscent of the saddle  on a [[White-winged Black Tern]]; however, it is  not so dark in the Whiskered Tern. In addition the rump is not as conspicuously white as on a White-winged Black Tern and the wings of a Whiskered Tern are a more uniform grey.
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[[Image:DSCF8267 Whiskered Tern.jpg|thumb|350px|right|Juvenile<br />Photo &copy; by {{user|Jason+Bugay+Reyes|Jason Bugay Reyes}}<br />Kota Kinabalu Waterfront, Sabah, [[Malaysia]], September 2009]]
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The bill is heavier than in other 'marsh terns'.
  
The bill is heavier than in other 'marsh terns'.
 
 
==Distribution==
 
==Distribution==
 
[[Europe]] and [[Asia]].  They migrate to sub-Saharan west [[Africa]] in the winter, although a few birds will remain in the Mediterranean. Birds which breed in eastern Europe winter in large numbers in the Nile Delta and eastern and southern [[Africa]].
 
[[Europe]] and [[Asia]].  They migrate to sub-Saharan west [[Africa]] in the winter, although a few birds will remain in the Mediterranean. Birds which breed in eastern Europe winter in large numbers in the Nile Delta and eastern and southern [[Africa]].
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Accidental '''vagrant''' to [[Cape May]], [[New Jersey]] (2 records) with one moving south to [[Delaware]].
 
Accidental '''vagrant''' to [[Cape May]], [[New Jersey]] (2 records) with one moving south to [[Delaware]].
 
==Taxonomy==
 
==Taxonomy==
====Subspecies<sup>[[#References|[5]]]</sup>====
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====Subspecies====
There are 7 subspecies named by Clements
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[[Image:21743888768 202f1dcd20 c.jpg|thumb|350px|right|Non-breeding adult<br />Photo &copy; by {{user|SeeToh|SeeToh}}<br />Lorong Halus, [[Singapore]], October 2015]]
*''C. h. hybrida'':
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''Chlidonias hybrida'' has three subspecies<sup>[[#References|[1]]]</sup>:
:*South-western [[Europe]] to [[Kazakhstan]]; winters [[Africa]] and south-western [[Asia]]
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*''C. h. hybrida''
*''C. h. swinhoei'':
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:*Breeds northwestern [[Africa]] and central and southern [[Europe]] to southeastern [[Siberia]], eastern [[China]] and south to [[Pakistan]] and northern [[India]]; winters Africa and southern and southeastern [[Asia]] to Thai-Malay Peninsula, [[Sulawesi]], and the [[Philippines]]
:*Transbaikalia to eastern [[China]] and [[Taiwan]]
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*''C. h. delalandii''
*''C. h. indicus'':
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:*Eastern and southern [[Africa]], and [[Madagascar]]
:*Eastern [[Iran]] and [[Pakistan]] to northern [[India]]
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*''C. h. javanicus''
*''C. h. javanicus'':
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:*Breeds [[Australia]]; winters northern Australia north to [[New Guinea]], the Sunda Islands, and the [[Philippines]]
:*North-eastern [[India]] and [[Sri Lanka]]; winters [[Malaysia]] and [[Indonesia]]
 
*''C. h. sclateri'':
 
:*[[South Africa]] and [[Madagascar]]
 
*''C. h. delalandii'':
 
:*[[Kenya]] to [[Tanzania]]
 
*''C. h. fluviatilis'':
 
:*[[Australia]]; disperses to [[New Guinea]] and [[Moluccas]]
 
  
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The subspecies ''swinhoei'', ''indicus'', ''sclateri'' and ''fluviatilis'' are no longer recognized.
 
==Habitat==
 
==Habitat==
 
Inland marshes, pools and fishponds.
 
Inland marshes, pools and fishponds.
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The nest is a heap of aquatic vegetation or dry grass, placed either on floating  vegetation.  They  nest in colonies.
 
The nest is a heap of aquatic vegetation or dry grass, placed either on floating  vegetation.  They  nest in colonies.
 
==References==
 
==References==
#BirdLife International
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#{{Ref-Clements6thAug19}}#BirdLife International
 
#Collins Pocket Guide to British Birds 1966
 
#Collins Pocket Guide to British Birds 1966
 
#Collins Field Guide 5th Edition
 
#Collins Field Guide 5th Edition
 
#Collins Bird Guide ISBN 0 00 219728 6
 
#Collins Bird Guide ISBN 0 00 219728 6
#{{Ref-Clements6thDec08}}
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{{ref}}
 
{{ref}}
 
==External Links==
 
==External Links==
{{GSearch|Chlidonias+hybrida}}
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{{GSearch|"Chlidonias hybrida" {{!}} "Chlidonias hybridus" {{!}} "Whiskered Tern"}}
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<br />
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{{VSearch|"Chlidonias hybrida" {{!}} "Chlidonias hybridus" {{!}} "Whiskered Tern"}}
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<br />
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{{GS-checked}}1
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<br />
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<br />
  
[[Category:Birds]] [[Category:Chlidonias]] [[Category:Incomplete]]
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[[Category:Birds]] [[Category:Chlidonias]][[Category:Videos]]

Latest revision as of 01:03, 16 February 2024

Photo © by Dick Hoogenboom
Photo taken: Lesvos, Greece
Chlidonias hybrida

Identification

24-28 cm (9½-11 in)
Adult Summer

  • Black cap
  • White cheeks and sides of neck
  • Dark grey underparts
  • Lighter greyish above
  • Red bill
Photo © by armando tomas v
Delta Llobregat, Viladecans, Barcelona, Spain, May 2005

Adult Winter

  • Black cap shrinks to leave a finely barred rear crown, with solid black patch behind the eye.
  • Black bill

Juvenile

  • Pale brown scaly upperparts
  • Whitish rump

Similar Species

Summer adults resemble Common Terns more than Black Terns due to their black and white heads, but the short, broad wings and tails are typical of 'marsh terns'. and their underparts are so dark that the white cheeks stand out boldly.

Juveniles have a dark mantle reminiscent of the saddle on a White-winged Black Tern; however, it is not so dark in the Whiskered Tern. In addition the rump is not as conspicuously white as on a White-winged Black Tern and the wings of a Whiskered Tern are a more uniform grey.

Juvenile
Photo © by Jason Bugay Reyes
Kota Kinabalu Waterfront, Sabah, Malaysia, September 2009

The bill is heavier than in other 'marsh terns'.

Distribution

Europe and Asia. They migrate to sub-Saharan west Africa in the winter, although a few birds will remain in the Mediterranean. Birds which breed in eastern Europe winter in large numbers in the Nile Delta and eastern and southern Africa.

Accidental vagrant to Cape May, New Jersey (2 records) with one moving south to Delaware.

Taxonomy

Subspecies

Non-breeding adult
Photo © by SeeToh
Lorong Halus, Singapore, October 2015

Chlidonias hybrida has three subspecies[1]:

  • C. h. hybrida
  • C. h. delalandii
  • C. h. javanicus

The subspecies swinhoei, indicus, sclateri and fluviatilis are no longer recognized.

Habitat

Inland marshes, pools and fishponds.

Behaviour

Diet

The diet includes terrestrial and aquatic insects, spiders, frogs, tadpoles, small crabs, shrimps and small fish.

Breeding

The nest is a heap of aquatic vegetation or dry grass, placed either on floating vegetation. They nest in colonies.

References

  1. Clements, J. F., T. S. Schulenberg, M. J. Iliff, S. M. Billerman, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2019. The eBird/Clements Checklist of Birds of the World: v2019. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
  2. BirdLife International
  3. Collins Pocket Guide to British Birds 1966
  4. Collins Field Guide 5th Edition
  5. Collins Bird Guide ISBN 0 00 219728 6

Recommended Citation

External Links



GSearch checked for 2020 platform.1

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