BRITISH BIRDS. 



383 



THE BLACK-THROATED DIVER. 



IMMATURE. 



BILL black and horn colour, tinged with blue, 

 three inches long, pointed and slender: nostrils 

 very near the base : tongue pointed : crown of the 

 head, and back of the neck mouse colour: irides 

 brown: scapulars, back, rump, tail, and wings, 

 black, edged with grey: quill feathers black; tail 

 very short and rounded. The whole under side of 

 the body, from the throat to the tail, silvery white, 

 except a brown bar which crosses the vent: inner 

 coverts of the wing white: legs remarkably flat, 



