m (References updated) |
(Picture of non-breeding adult. Imp size. Some extra info) |
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| Line 3: | Line 3: | ||
''Sterna anaethetus'' | ''Sterna anaethetus'' | ||
==Identification== | ==Identification== | ||
| − | + | 35–38 cm (13¾-15 in) | |
*Brownish-grey upperparts | *Brownish-grey upperparts | ||
*Narrow white forehead patch, extending behind eye | *Narrow white forehead patch, extending behind eye | ||
| − | *Black loral stripe | + | [[Image:D3A 1787 800.jpg|thumb|350px|right|Photo by {{user|AJDH|AJDH}}<br />Jarim Islands, [[Arabia|Arabian Gulf]], June 2009]] |
| + | *Black [[Topography#Heads|loral]] stripe | ||
*May show pale collar | *May show pale collar | ||
*White underparts | *White underparts | ||
*Black legs and bill | *Black legs and bill | ||
| − | * | + | *Long deeply forked tail<br /> |
| − | |||
'''Juvenile''': | '''Juvenile''': | ||
*Scaly grey upperparts | *Scaly grey upperparts | ||
| Line 23: | Line 23: | ||
<sup>[[#References|[1]]]</sup>. | <sup>[[#References|[1]]]</sup>. | ||
====Subspecies==== | ====Subspecies==== | ||
| + | [[Image:22075829442 69b75db991 c.jpg|thumb|350px|right|Non-breeding adult<br />Photo by {{user|SeeToh|SeeToh}}<br />Straits of [[Singapore]], October 2015]] | ||
There are 6 subspecies: | There are 6 subspecies: | ||
*''O. a. melanopterus'': | *''O. a. melanopterus'': | ||
| Line 37: | Line 38: | ||
:*[[West Indies]], [[Belize]] and islands off [[Venezuela]] | :*[[West Indies]], [[Belize]] and islands off [[Venezuela]] | ||
==Habitat== | ==Habitat== | ||
| − | Oceans; breeds on rocky islands. | + | Oceans; breeds on coral beaches and rocky islands. |
==Behaviour== | ==Behaviour== | ||
====Breeding==== | ====Breeding==== | ||
The single egg is laid in a ground scrape or hole. | The single egg is laid in a ground scrape or hole. | ||
====Diet==== | ====Diet==== | ||
| − | The diet | + | The diet consists of fish, squid, crustaceans and aquatic insects. |
==References== | ==References== | ||
| − | #{{Ref- | + | #{{Ref-Clements6thAug15}}#Collins Bird Guide ISBN 0 00 219728 |
#Wikipedia | #Wikipedia | ||
| + | #Handbook of the Birds of the World Alive (retrieved October 2015) | ||
{{ref}} | {{ref}} | ||
==External Links== | ==External Links== | ||
Revision as of 19:32, 13 October 2015
- Onychoprion anaethetus
Sterna anaethetus
Identification
35–38 cm (13¾-15 in)
- Brownish-grey upperparts
- Narrow white forehead patch, extending behind eye
- Black loral stripe
- May show pale collar
- White underparts
- Black legs and bill
- Long deeply forked tail
Juvenile:
- Scaly grey upperparts
- Pale underparts
Distribution
Mexico, the Caribbean and west Africa; other races occur around Arabia and in Southeast Asia and Australasia.
Scarce vagrant to British Isles, usually during the summer.
Taxonomy
Sooty Tern, Bridled Tern, Gray-backed Tern and Aleutian Tern are each others closest relatives and all four are sometimes included in the genus Sterna. [1].
Subspecies
There are 6 subspecies:
- O. a. melanopterus:
- Coastal western Africa
- O. a. fuligulus:
- O. a. antarcticus:
- Madagascar, Aldabra, Seychelles, Mascarene and Andaman islands
- O. a. anaethetus:
- Ryukyu Island, Taiwan, Philippines, Indonesia and Australia
- O. a. nelsoni:
- West coast of Mexico and Central America
- O. a. recognitus:
- West Indies, Belize and islands off Venezuela
Habitat
Oceans; breeds on coral beaches and rocky islands.
Behaviour
Breeding
The single egg is laid in a ground scrape or hole.
Diet
The diet consists of fish, squid, crustaceans and aquatic insects.
References
- Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2015. The eBird/Clements checklist of birds of the world: v2015, with updates to August 2015. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
- Collins Bird Guide ISBN 0 00 219728
- Wikipedia
- Handbook of the Birds of the World Alive (retrieved October 2015)
Recommended Citation
- BirdForum Opus contributors. (2024) Bridled Tern. In: BirdForum, the forum for wild birds and birding. Retrieved 26 April 2024 from https://www.birdforum.net/opus/Bridled_Tern
