132 



GULL. 



species, which, from later observations, have proved to be only the 

 effect of age or sex : much, therefore, remains to be ascertained on 

 this head, as such uncertainties are only to be removed by slow 

 degrees, and reiterated observation. 



I — GREAT GULL. 



Lams icthyaetns, Ind. Orn. ii. 811. Gm. Lin. i. 599. Pall. reise, ii. 713. p. 27. Act. 



Holm. iv. 119. 7. 

 Die grosse Lachmoeue, Qm. reise, i. 152. t. 30, 31, 

 Mauve, Tern. Man. Ed. 2d. Anal. p. cviii. 

 Great Cull, Gen. Syn. vi. 370, 1. 



SIZE of the Bernacle Goose, and sometimes larger; weight 

 between two and three pounds; bill dusky yellow at the base, 

 towards the end crimson ; tip yellow, near it crossed with a dusky 

 brown spot ; inside of the mouth red ; irides brown ; the head and 

 half the neck black; eyelids white; back and rump pale grey; 

 second quills darker; greater quills white; the first five tipped with 

 black ; tail even at the end, and white; legs reddish brown. 



Inhabits the borders of the Caspian Sea, appears similar to the 

 Black-headed Gull, but is clearly different, being so many degrees 

 larger; lays the eggs on the bare sand, without the preparation of 

 a nest, in shape oblong, marked with numerous brown spots, and 

 some paler ones intermixed. In flying this bird has a hoarse cry, 

 somewhat like that of a Raven. 



2. -BLACK-HEADED GULL. 



Larus ridibundus, Ind. Orn. ii. 811. Lin. i. 225. Gm. Lin.'i. 601. Act. Holm. iv. 



120. 9. Gm. reise, iv. 140 ? Schcef. el. Orn. t. 44. Sepp, t. p. 153. male & fem. 



Am. Orn. ix. 89. pi. 74. 4. Tern. Man. 304. Id. Ed. 2d. 783. 

 Gavia ridibunda phoeuicopos, Bris. vi. 197. 7rf.8vo.ii. 413. 

 Larus ulbus erythrocephalus, Klein, 138. 8. Id. Stem. 32. t. 36. f. 2. a— c. 

 Larus atricilloides, Ind. Orn. ii. 813. Gm. Lin. i. 601. Falck. It. iii. 355. t. 24. 



