492 ADDENDA 



3. Colymbus auritus. Horned Grebe. 



N. part of N. Hemis. Breeds from the lower Yukon, n. Mack., cen. 

 Keew., sw. Ung., and Magd. Is. s. to ne. Maine, cen. Minn., n. Utah, and 

 s B.C. ; winters from s. B.C., s. Ont., and Maine s. to Fla., the Gulf Coast 

 and s. Calif.; casual in Greenl. 



4. Colymbus nigricollis californicus. Eared Grebe. 



Breeds from cen. B.C., Great Slave Lake, and Man. s. to n. Iowa, n. 

 Ariz., and s. Calif. ; winters from cen. Calif, to Cape San Lucas and Guat.; 

 e. to Kan. in migration; casual in Mo., Ind., and Ont. 



5. Colymbus dominions brachypterus. Mexican Grebe. 

 From s. Tex. and L.C. to Panama. 



6. Podilymbus podiceps. Pied-billed Grebe. 



Breeds from B.C., s. Mack., s. Keew., Que., and N.B. s. to Chile and 

 Argentina, but often rare or local; winters from Wash., Tex., Miss., and 

 Potomac Vail. s. 



7. Gavia immer. Loon. 



N. part of N. Hemis. Breeds in Am. s. to n. Calif., Wyo., Iowa, and 

 eastward to N.S.; winters from B.C., Great Lakes, and New Eng. to Gulf 

 Coast and L.C. 



9. Gavia arctica. Black-throated Loon. 



N. part of N. Hemis. In Am. breeds from Kotzebue Sound, Alaska 

 s. to Ung. ; winters in s. Can. ; casually to Colo., Neb., and e. to Long I. 



10. Gavia pacifica. Pacific Loon. 



In Am. breeds s. to n. B.C., s. Mack., cen. Keew., Gt. Slave Lake, 

 and base of Alaska penin.; winters along coast from B.C. to L.C. 



11. Gavia stellata. Red-throated Loon. 



N. part of N. Hemis. In Am. breeds s. to cen. Keew., Que., N.B., and 

 N.F. ; winters from s. B.C., the Great Lakes, and Maine s. to Fla. and s. 

 Calif. 



12. Lunda cirrhata. Tufted Puffin. 



Coasts and islands of Arctic Ocean, Bering Sea, and N. Pac. s. to Santa 

 Barbara Is., Calif., and from Bering Strt. to Japan. 



15. Cerorhinca monocerata. Rhinoceros Auklet. 



Coasts and islands of N. Pac. Breeds from Aleutians to Wash. ; winters 

 from Wash, to L.C. and to Kurile Is. 



16. Ptychoramphus aleuticus. Cassin Auklet. 



Pacific coast of N. Am., from Aleutian Is. to L.C. Breeds locally 

 throughout its range. 



17. Phaleris psittacula. Paroquet Auklet. 



Coasts and Is. of w. Arctic Ocean, Bering Sea, and N. Pac.; winters 

 from Aleutians to Monterey Bay, Calif., and in Kurile Is.- 



20. JEihia. pusilla. Least Auklet. 



Coasts and Is. of N. Pac. Breeds from Bering Strait to Aleutian Is.; 

 winters from Aleutians and Commander Is. s. to Wash, and Japan; casual 

 at Pt. Barrow. 



21. Synthliboramphus antiquus. Ancient Murrelet. 



Coasts and Is. of N. Pac. Winters from the Aleutians s. to Santa Bar- 

 bara and to Japan. 

 23. Brachyramphus marmoratus. Marbled Murrelet. 



Coasts and Is. of N. Pac. Winters from Vancouver I. to Santa Barbara. 

 25. Brachyramphus hypoleucus. Xantus Murrelet. 



From Monterey Bay to Cape San Lucas. 

 29. Cepphus columba. Pigeon Guillemot. 



Coasts and Is. from Arctic Ocean to s. Calif, and n. Japan. 

 30a. Uria troille californica. California Murre. 



Coasts and Is. of N. Pac. Breeds to cen. Calif. ; winters to s. Calif. 

 36. Stercorarius pomarinus. Pomarine Jaeger. 



Both Hemis. Breeds s. to n. Alaska, n. Mack., Melville Penin., and 

 Baffin Land ; also on Arctic Is. of E. Hemis. ; migrates off Atlantic coast s. 



