RING-BILLED GULL. 
243 
Note. — Nuttall stated that the European Common Gull (jL. 
canus) — also called Seamew, from its feline cry — occurs regu- 
larly in winter on our shores; but in this statement he was merely 
following Richardson, who confounded this species with the Ring- 
billed Gull. The only known instance of the occurrence of the 
Seamew on this side of the Atlantic is the taking of one example 
in Labrador by Dr. Coues. 
RING-BILLED GULL. 
Larus delawarensis. 
Char. Mantle deep pearl gray ; head, neck, tail, and under parts 
white ; outer wing-feathers black, tipped with white, the other primaries 
more or less barred with black and tipped with white ; bill greenish yel- 
low, with a band of black near the end and tipped with orange ; legs and 
feet yellow, sometimes tinged with green. 
In winter the head and nape are spotted with pale dusky. Young birds 
are mottled white and dusky ; on the upper parts the dark tint prevails, 
varied on the back with pale buff, and the lower parts are mostly white; 
tail dusky, tipped with white and pale gray at the base; shoulders gray; 
bill dusky, fading toward the base. Length 19J4 inches. 
Nest. On a grassy island in a lake or on an ocean cliff, — made of coarse 
grass or sea-weed. 
Eggs. 2-3; ground color varied from pale to dark buff, sometimes 
tinged with green or slate ; profusely marked with several shades of 
brown and lilac ; average size about 2.40 X t.yo. 
The Ring-billed Gull is distributed throughout this continent, 
but is more abundant on the saline lakes of the plains than along 
the sea-coast. In the West the breeding area extends from the 
lower valley of the Saskatchewan to Great Salt Lake, but on the 
coast this Gull does not nest farther south than Labrador. It is 
rather common during spring and fall on the New England coast, 
and in winter ranges from the Middle States to the West Indies. 
Only a few examples have been taken on the Great Lakes. 
The chief summer diet of this species, in the interior, is grass- 
hoppers, which the birds catch in the air. 
