Society for the jrotection of Birds. 
EDUCATIONAL SERIES. Edited by H. E. DRESSER, F.L.S., F.Z.S. 
No. 19.—GULLS. 
By HOWARD , SAUNDERS, 83.5, FZ-S. 
KITTIWAKE GULL. 
I. Name—_GULLS. 
Family—Laridex. 
Sub-Family—Larine. 
Genus 1.—Larus. DL. ridibundus. Brown-headed Gull. 
DL. canus. Common Gull. 
L. argentatus. Herring Gull. 
L. fuscus. Lesser Black-backed Gull. 
DL. marinus. Great Black-backed Gull. 
Genus 2.— Rissa. R. tridactyla. Kittiwake Gull. 
II. General Description. 
All the above Gulls when adult have the underparts and tail white, and both sexes are 
alike in plumage. Hind toe well developed, except in Rissa. 
Illustration, by kind permission of Messrs. Gurney & Jackson, from ‘Manual of British Birds,” by 
Mr. Howard Saunders. 
