American sandwich tern

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American sandwich tern
American sandwich tern in plain dress in Florida

American sandwich tern in plain dress in Florida

Systematics
Class : Birds (aves)
Order : Plover-like (Charadriiformes)
Family : Terns (Sternidae)
Genre : Thalasseus
Type : American sandwich tern
Scientific name
Thalasseus acuflavidus
( Cabot , 1847)

The American sandwich tern ( Thalasseus acuflavides , Syn. Thalasseus acuflavidus; Thalasseus sandvicensis acuflavidus ) is a species of bird in the family of the tern (Sternidae).

Until recently, it was considered a subspecies (ssp.) Of the sandwich tern , according to Avibase, IUCN Redlist and Handbook of the Birds of the World

In 2011 the British Ornithologists' Union recommended splitting off as a separate species .

In 2015, the Association of European Rarities Committees recommended a spin-off.

This separation is already taken into account in the IOC World Bird List of the International Ornithological Union .

The American sandwich tern is more closely related to the ornamental tern .

It occurs on the Caribbean islands and along coasts of the Atlantic and Pacific Oceans in North and South America .

Their range includes coastal areas.

description

The bird is 36–46 cm tall and weighs 175–202 g.

The American sandwich tern is very similar to the sandwich tern , differs in its longer and thinner beak with a curved upper edge of its beak ( culmen) , the apex and forehead are bright white, not gray. The eye ring is wider at the back and there are small hooks on the outer hand wings.

Geographic variation

The following subspecies are recognized:

Way of life

The diet consists of fish .

literature

  • M. Garner, I. Lewington, J. Crook: Identification of American Sandwich Tern . In: Dutch Birding Vol. 29, p. 5, 2011
  • Samuel Cabot III: A Comparison between Sterna Cantiaca, Gm. of Europe and Sterna acuflavidam Nobis, hitherto considered identical with S. Cantiaca . In: Proceedings of the Boston Society of Natural History . tape 2 , 1847, p. 257-258 ( biodiversitylibrary.org ).
  • Howard Saunders: On the Sterninae, Terns, with Descriptions of three new species . In: Proceedings of the Scientific Meetings of the Zoological Society of London for the Year 1876 . 1876, p. 638-672 ( biodiversitylibrary.org ).

Individual evidence

  1. ↑ Avibase
  2. ^ IUCN Redlist
  3. ↑ Handbook of the Birds of the World
  4. ↑ a b Report 2011
  5. ↑ a b Northamerica Birding
  6. ↑ AERCTAC'sTAXONOMIC RECOMMENDATIONS2015report
  7. ↑ a b IOC World Bird List Noddies, gulls, terns, auks
  8. ↑ ES Bridge, AW Jones, AJ Baker: A phylogenetic framework for the terns (Sternini) inferred from mtDNA sequences: implications for taxonomy and plumage evolution. In: Mol. Phyl. & Evol. 2005, Vol. 35, No. 2, pp. 459-469.
  9. ↑ a b Handbook of the Birds of the World
  10. ^ Samuel Cabot III, p. 257.
  11. ↑ Howard Saunders, p. 654 Figure 1.

Web links

Commons : American Sandwich Tern  - Collection of images, videos and audio files