NATATORES. LARUS. GULL. 



Forehead and crown white, tinged with grey. Nape, and 

 back part of the neck, and upper parts of the body, 

 blackish-grey, tinged with clove-brown, the edges of the 

 feathers being fringed with greyish-white. Scapulars 

 edged with white. Greater coverts grey, deeply mar- 

 gined with white. First four primary quills having 

 their outer webs and tips black, and the inner webs 

 greyish- white. Under plumage white. Tail white for 

 two- thirds of its length, terminated by a broad black 

 bar, slightly concave or forked. Legs and toes livid or 

 pale flesh-red. Two or three light grey feathers indi- 

 cating the approaching change of plumage are seen up- 

 on the back ; and this change, when perfected, brings 

 the bird to the state of the Little Gull of MONTAGU, de- 

 scribed as above mentioned, where the whole of the 

 mantle and scapulars are stated to be of a "Jine cine- 

 reous grey? like that of the Herring and most of the 

 lighter-coloured Gulls. 



BLACK-HEADED GULL. 



LARUS RIDISUNDUS, Linn. 

 PLATE XCII. 



Larus ridibundus, Lath. Ind. Orn. 2. 811. 2 Shaw's ZooL 13. 201. pi. 22. 



Flem. Br. Anim. 1. 141. No. 230. 



La Mouette rieuse, ou a Capuchon brun. Temm. Man. d'Orn. 2. 780. 

 Schwarzkbpfige Meve, Bechst, Naturg. Deut. 4. 635 Meyer, Tasschenb. 



Deut. 482. 

 Black-headed Gull, Mont, in Linn. Trans. 7- 284 Mont. Orn. Diet, and 



Sup. and App. to Sup. 



Red-legged Gull, Shaw's ZooL 13. 201. pi. 22. 

 Laughing Gull, Rennie's Mont. Orn. Diet. 291. 



'Larus ridibundus, Linn. Syst. 1. 225. 9 Gmel. Syst. 1. 601. 

 Gavia ridibunda Phcenicopos, Briss. 6. 197' 14. 

 Larus cinereus, Raii Syn. 128. A. 5 Will 264. 

 Summer La Mouette rieuse, Buff. Ois. 8. 433 Id. PL Enl. 970. 

 Plumage. \ Brown-headed Gull, Albin. 2. tab. 86. 



Black-headed Gull, Br. ZooL 2. 541. No. 252 Arct. ZooL 2. No. 455. 



Will. (Angl.) 347 Lath. Syn. 6. 380. 9 BewicWs Br. Birds, ed. 1820, 



p. t. 222. 



