Population information

Order name Charadriiformes
Family name Laridae
Scientific name Thalasseus sandvicensis Common name Sandwich Tern
Population name acuflavidus, S Caribbean (bre)
Breeding range Netherlands Antilles-Venezuela Non-breeding range S Caribbean, Atlantic coast S America to Argentina
Red List Category Least Concern
Ramsar regions Neotropics
Notes Form eurygnathus (“Cayenne Tern”; often misspelt eurygnatha) previously considered a separate species, but S Caribbean data indicate it is a race or perhaps morph of T. sandvicensis, and that all New World populations (except those of extreme N) have at least small percentage of “Cayenne”-type birds; based on recent genetic study, eurygnathus here treated as a synonym of acuflavidus; the two interbreed freely in S Caribbean, and mixed pairs occur in Patagonia and Puerto Rico; in Curaçao typical acuflavidus make up 20% of population, while in French Guiana they comprise less than 1%. Two subspecies recognized.

Conservation Framework

Conservation framework Notes
No conservation frameworks
Note:

Population size

Publication Start year End year Minimum Maximum Estimate quality Notes References Actions
WPE 1 0 0 -1 -1
WPE 2 0 0 -1 -1
WPE 3 0 0 35,000 37,000 [R494]
WPE 4 0 0 35,000 37,000 [R494]
WPE 5 0 0 35,000 37,000 [R494]

Population trends

Publication Start year End year Trend Trend quality Notes References Actions
WPE 1 0 0 Unknown
WPE 2 0 0 Unknown
WPE 3 0 0 Unknown
WPE 4 0 0 Unknown
WPE 5 0 0 Unknown No idea

Population 1% level

Publication Yearset 1 percent Note
WPE 1 0 -1
WPE 2 0 -1
WPE 3 2002 360
WPE 4 2006 360
WPE 5 2012 360

References

  • R494 - Norton, R.L. 2000. Status and Conservation of Sandwich and Cayenne Terns in the West Indies. In: Schreiber, E.A. and Lee, D.S. (eds) Status and Conservation of West Indian seabirds. Soc. Caribbean Ornith. Spec. Pub. No.1.: 65-79.

Notes




Copyright Wetlands International 2012

Citation: Wetlands International (). "Waterbird Population Estimates" . Retrieved from wpe.wetlands.org on