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BRUttOi J CUPKE LTD LlTriOS HULL AND LONDON 



Figs. 436 — 437 Arctic Tern. 

 438 — 439 Little Tern. 

 440 — 442 Black-Headed Gull. 



Figs. 443—444 Common Gull. 



445 Herring Gull. 



446 Great Black-Backed Gull 



Fig. 447 Lesser Black-Backed Gull. 



