470 



NATATORES. STERNA. 



TERN. 



General 

 descrip- 

 tion 



Summer 

 plumage. 



Winter 

 plumage. 



PLATE 90. Fig. 1. represents it of the natural size, in the 



summer plumage. 



Bill one inch and a half in length, from the forehead to 

 the tip ; red for two-thirds of its length, with the point 

 black. Forehead, crown, and long occipital feathers 

 intense black ; the rest of the face, cheeks, and throat, 

 white. Breast having a slight tinge of pearl-grey ; the 

 rest of the under plumage white, frequently with a 

 very faint rosy tinge. Head, neck, mantle, and wings, 

 pearl-grey. Lower part of the back and upper tail- 

 coverts white. Tail having the exterior webs of the 

 feathers grey, increasing in depth of colour to the out- 

 ermost one, in which it is greyish-black. Quills, with 

 the outer web of the first feather black for the greater 

 part of its length ; the rest hoary grey ; the white up- 

 on their inner webs ending at about an inch and a half 

 from the tips. Legs and feet bright tile-red ; the tarsus 

 seven-eighths of an inch long. 



In winter the black upon the forehead and crown loses its 

 intensity; in other respects there is no difference be- 

 tween that and the summer plumage. 



ROSEATE TERN. 



STERNA DOUGALLII, Mont. 



PLATE LXXXIX. FIGS. 1. & 2. 



Sterna Dougallii, Mont. Orn. Diet. Sup. with fig Selby in Zool. Jour. 



2. 462. Shaw's ZooL 13. 152 Flem. Brit. Anim. 1. 143. No. 234. 

 Hirondelle-de-Mer Dougall, Temm. Man. d'Orn. 2. 738. 

 Roseate Tern, Mont. Orn. Diet. Sup Bewick's Br. Birds, ed. 1826, pt. 192. 



Shaw's ZooL 13. 153 Flem. Br. Ariim. 1. 143. 234 Rennie's Mont. 



Orn. Diet. 432. 



Periodical THIS species of Tern was first discovered by Dr MAC- 



visitant. D OUGALL of Glasgow, on the Cumbray Islands in the Frith 



of Clyde, the breeding resort of great numbers of the com- 



