THE K1TTIWAKB. 
313 
In the breeding season the head, neck, tail and 
under plumage are pure white ; the mantle, scapu- 
lars, back and wings, pearl-grey ; the quills with 
the ends black, the colour running along the whole 
outer web of the first, and on the second, third, and 
fourth to a gradually lesser extent ; the hill is green- 
ish yellow, the inside of the mouth rich reddish 
orange-yellow ; legs and feet greenish black. In 
winter, the feathers in front of the eye, the end of 
the auriculars, and the occiput, shading downwards 
on the back of the neck, are pale blackish grey. 
FINIS. 
EDINBURGH : 
PRINTED BY W. H. LIZARS. 
