ADDENDA 493 



to N. J. ; common fall migrant on coast of Calif. ; winters s. to Africa, Aus- 

 tralia, and Peru; accidental in Nebr. and the Galapagos L^. 



37. Stercorarius parasiticus. Parasitic Jaeger. 



Both Hemis. Breeds|in Am. from nw. Alaska, Melville I., and n. 

 Greenl. s. to cen. Keew., cen. Mack., and Aleutian Is.; migrant on both 

 coasts of the U.S.; winters s. to Brazil, Australia, and Africa; casual to 

 Colo., Mo., and Great Lakes. 



38. Stercorarius longicaudus. Long-tailed Jaeger. 



N. part of N. Hemis. Breeds in Am. on coasts of Kotzebue and Norton 

 Sounds, n. Mack., and n. Greenl. ; winters to Gibraltar and Japan; casual 

 to Calif., and in migration New Eng. 

 40a. Rissa tridactyla pollicaris. Pacific Kittiwake. 



Coasts of N. Pac., Bering Sea, and adjacent Arctic Ocean. Breeds s. 

 to Aleutian and Commander Is. ; winters from s. Alaska to L.C. 

 42. Larus hyperboreus. Glaucous Gull. 



Breeds in Arctic regions. In N. Am. from nw. Alaska, Melville I., and 

 n. Greenl. s. to Newfoundland, cen. Ung., n. Mack., and Aleutians; win- 

 ters from Aleutians and Greenl. to Long I., the Gt. Lakes, and Monterey, 

 Calif.; casually to Tex., etc. 

 44. Larus glaucescens, 'Glaucous-winged Gull. 



Coasts of N. Pac., Bering Sea, and adjacent Arctic Ocean. Breeds 

 from Kotzebue Sound to Wash, and Kamchatka, etc.; winters from 

 Aleutians to L.C. and Japan. 

 49. Larus occidentalis. Western Gull. 



Breeds from Wash, to L.C. ; winters from Wash, to sw. Mex. ; casual to B.C. 

 51. Larus argentatus. Herring Gull. 



N. Hemis. In America breeds from s. cen. Alaska, Melville I., and Cum- 

 berland Sound s. to s. Ont., n. N.D., s. Alberta, and s. B.C.; winters from 

 s. B.C., Great Lakes, and Gulf of St. Lawr. to Bahamas, Cuba, Mex., 

 Yucatan, and L.C. 



53. Larus californicus. California Gull. 



Breeds from Ore. and Gt. Slave Lake to n. N.D., n. Utah, and ne. Calif., 

 winters from Ore. and Gt. Salt Lake to w. Mex. and L.C. 



54. Larus delawarensis. Ring-billed Gull. 



Breeds from Gt. Slave Lake, s. Keew., and s. Ung. s. to n. Que., N.D., 

 s. Colo., and s. Ore.; winters from B.C. and the Gt. Lakes to Bermuda, 

 the Gulf Coast, Cuba, and s. Mex. 



55. Larus brachyrhynchus. Short-billed Gull. 



Breeds from Kotzebue Sound to Anderson River and s. to Gt. Slave 

 Lake; winters from Alaska to s. Calif. 



57. Larus heermanni. Heermann Gull. 



Breeds in L.C. and w. Mex.; wanders n. to s. B.C.; winters from n. 

 Calif, to s. Guatemala. 



58. Larus atricilla. Laughing Gull. 



Atlant. and Gulf coast of U.S. and both coasts of Mex. ; winters from 

 S.C. and Gulf coast to w. Mex., Guat., and Guiana, and casually to 

 Chile and Brazil; casual to N.M., Colo., and eastward. 



59. Larus franklini. Franklin Gull. 



Breeds from sw. Sask. and sw. Keew. to Iowa, Minn., and S.D.; win- 

 ters on Gulf coast of Tex. and La. and in Peru and Chile. 



60. Larus Philadelphia. Bonaparte Gull. 



Breeds in nw. Alaska and n. Mack. ; winters from Wash, and N. J. to 

 Fla., Gulf Coast, Mex., Yucatan, and L.C. 



62. Xema sabini. Sabine Gull. 



Breeds on w. coast of Alaska, n. Mack., n. Keew., and n. Greenl., and 

 on Arctic Is. of Europe and Asia; in migration on both coasts of U.S. 

 and casual in the interior; winters in Peru. 



63. Gelochelidon nilotica. Gull-billed Tern. 



Almost cosmopolitan. In Am. breeds fromVa. to Tex. and the Bahamas; 

 winters in s. Mex. and s. Guat. and from Brazil to s. Argent. 



