BIRDS OF THE BRITISH ISLES. 



36: 



greenish ; legs and feet, greenish-yellow. Length, about 

 eighteen inches. The female is similar to the male, but is 

 a little less in size. The young have the upper parts more 

 or less marked with greyish-brown, dull brown, and greyish; 

 primaries, dusky-brown ; tail at terminal end, banded with 

 dusky-brown. 



Blacft^beabeb (Bull 



- - JOM/J Du/VCAfT^ 



The Black-headed Gull {Lams ridibundus, Linnceus) is 

 another resident species in the British Islands, and, like 

 many other of our resident gulls, is subject to much local, 

 also southern movement after the nesting season. It is 

 also met with in the temperate parts of Europe and Asia. 

 The adult in summer plumage has the mantle and wing- 

 coverts pearl-grey; quills, marked with white in centre, and 



