22. HEERMANN GULL. Larus heermanni. 
Rather common on bays and along the coast in summer, fall 
and winter. Contrary to the custom of most birds Heermann 
Gulls go south in spring to breed, on the islands off the Mexican 
coast. 
23. BONAPARTE GULL. Larus philadelphia. 
Rather common migrant, both along the coast and in the in- 
terior. A few remain along the coast in winter. 
24. CASPIAN TERN. Sterna caspia. 
Rare migrant. Has been taken at San Diego. 
20: ROYAL TERN. Sterna maxima. 
Rather rare winter residents along the coast. Go in small 
flocks. 
26. ELEGANT TERN. Sterna elegans. 
Rare or irregular winter visitant along the coast. 
27. FORSTER TERN. Sterna forsteri. 
Found sparingly along the coast nearly all the year. Common 
in the migrations when they also appear inland. 
28. COMMON TERN. Sterna hirundo. 
Occasional along the coast in the migrations. 
29. LEAST TERN. Sterna antillarum. 
Common summer residents, breeding at several places on the 
beach. Apparently not found inland. 
30. BLACK TERN. Hydrochelidon niger surinamensis. 
Rather common about fresh waters containing small fish in 
summer. Migrates along the coast. 
Order TUBINARES. Tube-nosed Swimmers. 
Marine, many species being found far at sea. Food and habits 
similar to those of gulls. 
Family DIOMEDIIDA. Albatrosses. 
31. BLACK-FOOTED ALBATROSS. Diomedea nigripes. 
382. SHORT-TAILED ALBATROSS. Diomedea albatrus. 
Frequently seen off the coast at all times of the year. Dead 
birds occasionally wash ashore. 
Family PROCELLARIDA. Fulmars and Shearwaters. 
338. PACIFIC FULMAR. Fulmaris glacialis glupischa. 
Common at sea in winter. Dead birds frequently wash ashore. 
Dichromatic; the black phase is most often found here. 
34. RODGERS FULMAR. Fulmaris rodgers . 
Found with the Pacific Fulmar, but in smaller numbers. 
35. PINK-FOOTED SHEARWATER. Puffinus creatopus. 
Rather common at sea in summer and fall. 
36. BLACK-VENTED SHEARWATER. Puffinus opistho- 
melas. 
More or less abundant at sea in summer after the close of the 
breeding season; occasionally seen near the b ach. They leave 
‘cr ae breeding grounds on islands off the Mexican coast in 
arc 
