...Now and then a gull circledbefore them, looked at them unconcernedly,as if they were in some wayof his kindred, and swept away into thedistance... 
Various 「Ainslee's magazine, Volume 16, No. 2, September, 1905」
...In legally permitting the slaughter of the robin, red-wingedblackbird, dove, grosbeak, wood-duck and gull the state of Louisianais very culpable...
William T. Hornaday 「Our Vanishing Wild Life」
... not one Gull or Tern would now Remain on our Atlantic Coast...
William T. Hornaday 「Our Vanishing Wild Life」
...Skuas and Jægers are birds having a Gull or Tern-like form and with a hookedbill, the base of which is covered with a scaly shield...
Chester A. Reed 「The Bird Book」
...This Gull in appearance is precisely like the two preceding ones but is considerablysmaller; 24 inches in length...
Chester A. Reed 「The Bird Book」
... This birdhas its name from its peculiar laughing cry when alarmed or angry; it isalso called the Black-headed Gull...
Chester A. Reed 「The Bird Book」
...Bonaparte's Gull...
Chester A. Reed 「The Bird Book」
...The Silver Gull is known to all...
John Albert Leach 「An Australian Bird Book」
...73 Pacific Gull (Larger), Gabianus pacificus...
John Albert Leach 「An Australian Bird Book」
...Ivory Gull (Pagophila alba)...
Frank M. Chapman 「Color Key to North American Birds」
...Glaucous Gull (Larus glaucus)...
Frank M. Chapman 「Color Key to North American Birds」
...Point Barrow Gull (Larus barrovianus)...
Frank M. Chapman 「Color Key to North American Birds」
...Great Black-backed Gull (Larus marinus)...
Frank M. Chapman 「Color Key to North American Birds」
...Vega Gull (Larus vegæ)...
Frank M. Chapman 「Color Key to North American Birds」
...Bonaparte Gull (Larus philadelphia)...
Frank M. Chapman 「Color Key to North American Birds」
...Sabine Gull (Xema sabinii)...
Frank M. Chapman 「Color Key to North American Birds」
...Larus argentatus Pontoppidan: Herring Gull...
Robert K Selander 「Vertebrates from the Barrier Island of Tamaulipas, México」
...The plumage cycle of the California gull (Larus californicus) withnotes on color changes of soft parts...
Robert K Selander 「Vertebrates from the Barrier Island of Tamaulipas, México」
...On the moors of Scotland, thehilly parts of the north of England, the mountains of Wales, andthe wastes of Ireland, it is as wild and free as the Gull on the sea-cliff...
Rev. C. A. Johns 「British Birds in their Haunts」
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