frakklin's rosy gull. 293 



after their prey of fry, burst out very oddly into a oh oh agli 

 agh, or a coarse screaming laugh. These birds had not 

 proceeded in their migrations further probably than Florida, 

 or the coast of the Mexican Gulf. 



The length of this species is about 17 inches ; alar extent 3^ feet. 

 Summer plumage; the bill, bare space above the knee, legs, feet, 

 sides of the mouth and eye-lids, dark lake-red. The bill nearly 2^ 

 inches long, Irids dark hazel. Above and below each eye marked 

 with a spot of white. Head and part of the neck black ; remainder 

 of the neck, breast, whole lower parts, tail coverts and tail, pure 

 white. Scapulars, wing coverts, and whole upper parts dark blue 

 ash-color. The first 5 primaries black towards their extremities ; 

 secondaries tipped widely with white, and all the primaries except 

 the 1st and 2d slightly touched with the same. Tail nearly even, its 

 coverts extending to within 1^ inches of its tip. The closed wings 

 extend 2 inches beyond the tail. A delicate tint of blush is percep- 

 tible along the breast and belly. 



FRANKLIN'S ROSY GULL. 



(Larus Franklinii, Swaixson' and Richard. North. Zool. ii. p. 424. 

 pi. 72. L. atricilla, Sabine. Franklin's Journ. p. 695.) 



Sp. Charact. — Mantle pearl grey ; the 5 exterior quills broadly 

 barred with black, the first one tipped with white for an inch ; bill 

 and feet vermilion-red ; tarsus 20 lines long. — Summer dress, with 

 a black hood. 



According to Dr. Richardson this is a very common spe- 

 cies in the interior of the fur countries, where it frequents 

 the shores of the largei lakes. They generally associate in 

 flocks, and are very noisy. They breed also in the neigh- 

 boring marshes. 



The present species is 17 inches in length : of the bill above 1 

 inch 5 lines. Tarsus 1 inch 8 lines. Middle toe 1 inch 3 lines. 

 Summer plumage : both eye-lids, the neck, rump, tail, and whole un- 

 der plumage, white ; the latter and interior of the wings deeply 

 25* 



