BLACK-HEADED GULL. 



575 



Bewick's figure of the Red-legged Gull is from a bird in 

 the plumage of its first winter, as indicated by the mark-y 

 ings on the anterior part of the wing, and the narrow black 

 bar at the end of the tail. In the truly adult bird in 

 winter the head is but slightly marked with a dusky patch 

 at the ear-coverts ; the back and wings uniform French 

 grey ; the wing-primaries as already described ; tail-coverts 

 and tail-feathers pure white ; neck, breast, and all the 

 under surface of the body, also pure white ; bill, legs, and 

 feet red. 



The vignette below was taken from a pen-and-ink sketch 

 sent me by Charles Anderson, Esq., to illustrate the breed- 

 ing-ground referred to at Twigmoor, near Brigg, Lincoln- 

 shire. 



^ 



