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Difference between revisions of "Black-naped Tern" - BirdForum Opus

(Flight photo added)
(Attempt to disguise some copied text. Taxonomy. References)
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[[Image:19005White-naped Tern.jpg|thumb|500px|right|Photo by {{user|Karim+Madoya|Karim Madoya}} <br />Lokawi Seashore, Kota Kinabalu]]
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[[Image:19005White-naped Tern.jpg|thumb|500px|right|Photo by {{user|Karim+Madoya|Karim Madoya}} <br />Lokawi Seashore, Kota Kinabalu, [[Malaysia]], August 2006]]
 
;[[:Category:Sterna|Sterna]] sumatrana
 
;[[:Category:Sterna|Sterna]] sumatrana
 
==Identification==
 
==Identification==
30cmWhite face and breast, greyish-white back and wings, black nape band, black spot in front of eye,  black bill with yellow tip, black legs and feet, brown iris, long forked tail.<br />
+
30cm<br />
'''Young birds''' - brown mottling on crown, blackish mottling on nape. <br />
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*White face and breast
'''Juvenile''' - side of head and nape greyish brown, brownish upperparts scalloped buff and grey, whitish rump,  rounded unforked tail, yellow bill and feet.  
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*Greyish-white back and wings
 +
*Black nape band
 +
*Black spot in front of eye
 +
*Black bill with yellow tip
 +
*Black legs and feet
 +
*Brown iris
 +
*Long forked tail
 +
[[Image:BNT MG 3116.jpg|thumb|350px|right|Photo by {{user|M+Kwan|M Kwan}}<br />Eastern Waters [[Hong Kong]], August 2008]]<br />
 +
'''Young birds''': mottled brown crown, blackish mottling on nape. <br />
 +
'''Juvenile''': nape and sides of head greyish brown, brownish upperparts with buff and grey scallops, whitish rump,  rounded tail, yellow bill and feet.  
 
==Distribution==
 
==Distribution==
[[Image:BNT MG 3116.jpg|thumb|350px|right|Photo by {{user|M Kwan|M Kwan }}<br />Eastern Waters [[Hong Kong]]]]
+
Pacific and Indian Oceans.   Breeds on Aldabra Atoll, [[Seychelles]], [[Fiji]] and [[Samoa]].  
Pacific and Indian Oceans. It is rarely found inland.  Breeds on [[Aldabra Atoll]], [[Seychelles]],
 
[[Fiji]] and [[Samoa]].  
 
 
==Taxonomy==
 
==Taxonomy==
 +
====Subspecies<sup>[[#References|[1]]]</sup>====
 
There are 2 subspecies:
 
There are 2 subspecies:
* ''S. s. sumatrana''
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*''S. s. sumatrana'':
* ''S. s. mathewsi''
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:*[[Andaman and Nicobar Islands]] to [[Japan]], [[Malaysia]] and [[Australasia]]
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*''S. s. mathewsi'':
 +
:*Aldabra, Amirante, Chagos and [[Maldives|Maldive islands]]
 
==Habitat==
 
==Habitat==
Open seas.
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Sea coasts, mudflats and harbours. It is rarely found inland.
 
==Behaviour==
 
==Behaviour==
 
====Breeding====
 
====Breeding====
The nest is typically a simple scrape in the sand or gravel; 1-2 eggs are laid.  
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The nest is a ground scrape in the sand or gravel on rocky islets. The clutch consists of 1 or 2 eggs.  
 
====Vocalisation====
 
====Vocalisation====
Voice: sharp ''tsii-chee-chi-chip'' or in alarm ''chit-chit-chitrer''.  
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'''Voice''': sharp ''tsii-chee-chi-chip'' <br />
 +
'''Alarm call''': ''chit-chit-chitrer''
 +
==References==
 +
#{{Ref-Clements6thDec09}}#Forestry.sarawak.gov
 +
#Andaman Birdwatching
 +
{{ref}}
 
==External Links==
 
==External Links==
 
{{GSearch|Sterna+sumatrana}}  
 
{{GSearch|Sterna+sumatrana}}  
 
[[Category:Birds]][[Category:Sterna]]
 
[[Category:Birds]][[Category:Sterna]]

Revision as of 21:33, 9 April 2010

Photo by Karim Madoya
Lokawi Seashore, Kota Kinabalu, Malaysia, August 2006
Sterna sumatrana

Identification

30cm

  • White face and breast
  • Greyish-white back and wings
  • Black nape band
  • Black spot in front of eye
  • Black bill with yellow tip
  • Black legs and feet
  • Brown iris
  • Long forked tail
Photo by M Kwan
Eastern Waters Hong Kong, August 2008


Young birds: mottled brown crown, blackish mottling on nape.
Juvenile: nape and sides of head greyish brown, brownish upperparts with buff and grey scallops, whitish rump, rounded tail, yellow bill and feet.

Distribution

Pacific and Indian Oceans. Breeds on Aldabra Atoll, Seychelles, Fiji and Samoa.

Taxonomy

Subspecies[1]

There are 2 subspecies:

  • S. s. sumatrana:
  • S. s. mathewsi:

Habitat

Sea coasts, mudflats and harbours. It is rarely found inland.

Behaviour

Breeding

The nest is a ground scrape in the sand or gravel on rocky islets. The clutch consists of 1 or 2 eggs.

Vocalisation

Voice: sharp tsii-chee-chi-chip
Alarm call: chit-chit-chitrer

References

  1. 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.
  2. Forestry.sarawak.gov
  3. Andaman Birdwatching

Recommended Citation

External Links

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