56 



LAEID^. 



Tropical ; As- 

 cension Island. 



Tropical. 



Tropical. 



Arctic America 

 to Peru in 

 winter. 



Arctic. 



N. Russia to 

 Mediterranean 

 in winter. 



Arctic 

 America, 

 wintering in 

 Florida and 

 California. 



328. Sooty Teen. Sterna fuUginosa, J. F. Gmelin, Three occur- 

 rences, 1869, 1882, 1885, all in England. 



Crown and sides of head black ; forehead white ; above nearly black, 

 below white ; tail much forked ; feet webbed to ends of toes. Length 

 16 inches. 



329. Lesser Sooty Tern. Sterna ancestheta, Scopoli. One record : 

 mouth of Thames, 1875. 



Smaller than preceding, paler above ; nape white ; web between outer 

 and middle toe not reaching to the claw of the middle toe. Length 14 

 inches. 



330. Noddy Tern. Anous stolidus (Linnaeus). Two records : Wex- 

 ford, 1830. 



General colour dark brown ; forehead and crown grey ; throat lead- 

 grey; tail long and graduated. Length 14| inches. 



Subfamily LAEINjE. Legs and feet large and strong; bill 

 shorter than head. 



331. Sabine's Gull. Xema sahinii (Joseph Sabine). Irregular 

 straggler. Young not infrequent ; adults very rare. 



Tail forJced. 



Adult, spring. Head dark grey, with black hne underneath. Length 

 13 inches. 



332. Wedge-tailed Gull. RJiodostetJda rosea, Macgillivray. One 

 record : Yorkshire. 



Tail long and graduated. Head rose-colour ; black collar round 

 middle of neck ; bill black ; legs and feet vermilion. Length 14 inches. 

 Eggs unknown. 



333. Little Gull. Larus minutus, Pallas. Autumn to spring, 

 sometimes in numbers. 



Spring. Head black. 



Winter. Head white, with a few dusky spots. 



Young. Head brownish, marked with black and grey. 



Smallest Gull, length of wing under 9^ inches. Length 10-11 inches. 



334. Bonaparte's Gull. Larus philadelijliia, Ord. Kare straggler. 

 Head greyish black ; bill black, rather slender ; legs red ; outer web 



of first primary black, white or pale grey margins to inner webs of two 

 outer primaries, broad black ends to first six. Length 14-15 inches. 



335. Brown-headed Gull. Larus ridihundus, Linnaeus. Besident. 



Head sooty brown from about March 1st to August 1st. 



Winter. Head white, with grey patch behind eye. 



Young. Marked above with brown, and, as in all black-headed Gulls, 

 has blackish bar at end of tail. 



Primaries white, with black tips, edged on the inner web with black 

 and usually on the outer web. Length 15-16 inches. 



