16 



Family LARIDJE GULLS AND TERNS. 



15. Rissa tridactyla (Linn.}. KITTIWAKE GULL. (40.) 

 Breeds from the Gulf of St. Lawrence northward, and winters o n 

 the Great Lakes, and along the Atlantic coast as far south as Massa- 

 chusetts, occasionally reaching Virginia. With us it is a common 

 late fall transient visitant and a comparatively rare winter resident, 

 occuring generally some distance off-shore (Dutcher, MS.). 



16. Larus glaucus Brunn. GLAUCOUS GULL; BURGO- 

 MASTER (42.) Breeds from Labrador northward; found in winter 

 as far south as Long Island. Several specimens have been killed on 

 the Lower Hudson River, and on Long Island it is found regularly 

 in small numbers (Dutcher, MS.). 



17. Larus marinus Linn. GREAT BLACK-BACKED GULL. (47.) 

 Breeds from the Bay of Fundy northward, and migrates south- 

 ward in the winter to the Great Lakes and Virginia. In this 

 vicinity it is a regular, but not common, winter resident. 



*i8. Larus argentatus smithsonianus Cones. HERRING 

 GULL. (5 1 a.) " North America generally, breeding on the Atlantic 

 coast from Maine northward"; winters from Nova Scotia to Cuba. 

 This is the common winter Gull of our harbor and coast. It 

 arrives from the north in September, and is abundant until April. 

 The adults are pearl gray ; the immature birds, or young born the 

 previous summer, are grayish brown. 



19. Larus delawarensis Ord. RING-BILLED GULL. (54.) 

 Breeds from Newfoundland northward, and in the interior, where 

 it is more common, from Southern Minnesota northward ; winters 

 south to Cuba and Mexico. It is here a rather uncommon spring 

 and fall migrant and winter resident (Dutcher, MS.). 



20. Larus atricilla Linn. LAUGHING GULL. (58.) Breeds 

 from Florida to Maine, and winters from South Carolina to Brazil. 

 It was formerly a common summer resident on Long Island, but 

 now is known to nest only on Great South Bay, where it is rare. 

 (See Group, main floor, opp. case G.) 



21. Larus Philadelphia (Ord). BONAPARTE'S GULL. (60.) 

 Breeds in the interior from Manitoba northward (apparently no 

 record of its breeding on the Atlantic coast), and migrates south- 

 ward to the Gulf of Mexico. It is found here as a regular spring 

 and fall migrant, and is sometimes seen in winter. 



