Genus THALASSEUS

Genus THALASSEUS.

Thalasseus Boie, Isis, 1822, p. 563.

Type, Sterna cantiaca Gmelin=S. sandvicensis Lathom,

This genus is distinguishable from all our Indian Terns by its very long bill, which is slightly curved throughout. The tail is nearly as long as in true Sterna and equal to about half the length of the wing; the feet are small and fully webbed; the tarsus is equal to about half the length of the culmen.

The genus has a wide range over the greater part of the Northern Hemisphere and ranges to Australia.

Key to Species.

A. Bill black, tipped yellow T. sandvicensis, p. 119.
B. Bill yellow.
a. No white forehead in breeding plumage. Wing under 300 mm………T. bengalensis, p. 124.
b. A white forehead in breeding plumage.Wing over 300 mm………T. bergii, p. 120.

BookTitle: 
The Fauna Of British India, Including Ceylon And Burma-birds(second Edition)
Reference: 
Baker, EC S (1922–1930) The fauna of British India, including Ceylon and Burma. Second edition. vol.6 1929.
Title in Book: 
Genus THALASSEUS
Book Author: 
Edward Charles Stuart Baker
Year: 
1929
Page No: 
118
M_ID: 
4584
M_SN: 
Thalasseus
Volume: 
Vol. 6
Term name: 
id: 
4910

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Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith