AVES. 15 



LONGIPENNES. 



LARIDAE. 



27. LARUS ATRICILLA Linne. 



Laughing gull; Black-headed gull; Black-poll. 



Linne, Syst. nat., ed. 10, 1758, vol. 1, p. 136. "AMERICA." 

 Audubon, Birds of Amer., 1844, vol. 7, p. 136, pi. 443. Egg, 

 Capen, 1886, pi. 23, fig. 1-3. 



Seacoasts; nests on the ground. 



ME. Rare summer resident (Metinic Green Id., Western Egg 

 Rock). (Late April)-Sept. Eggs, June 30- July 5. 



VT. Rare visitor: Bristol, May, 1883; St. Albans. 



MASS. Uncommon summer resident south of Cape Cod (Mus- 

 keget Id.; formerly at Egg Rock, Nahant); elsewhere a rare visitor. 

 May 7-Oct. 1 (late Nov.). Eggs, June 7- July 10. 



R. I. Rare summer visitor: Seakonnet Point, Sept., 1884; Sea- 

 konnet Point, Aug. 24, 1903. 



CONN. Rare summer visitor; may breed rarely. 



28. LARUS PHILADELPHIA (Ord) Gray. 



Bonaparte's gull. 



Sterna Philadelphia Ord, Guthrie's Geogr., hist., and commer- 

 cial grammar, 2d Amer. ed., 1815, vol. 2, p. 319. No locality; 

 probably PHILADELPHIA. 



Larus bonapartii Richardson. Audubon, Birds of Amer., 1844, 

 vol. 7, p. 131, pi. 442. Egg, Seebohm, 1896, p. 106, pi. 36, fig. 7. 



Salt and fresh water; nests on stumps or in low trees. 



ME. Common migrant, rare in winter. April- June 20; July 

 25-Nov. 20 (winter). 



N. H. Common migrant and rare winter resident coastwise. 

 May; Aug. 3-Oct. 20 (winter). 



VT. Rare migrant; ? "summer resident." 



MASS. Common migrant, mainly coastwise, and rare winter 

 resident. Mar. 10- June 3; July 24-Nov. 25 (winter). 



