% 51. Herring Gull (Larus argentatus). L.24. Ads., 
summer. White spaces at end of outer primaries 
sometimes joined. Ads., winter. Similar, but head 
and neck, streaked with grayish. Yung. Above ashy 
brown, margined and marked with buffy; wings brown- 
ish black; tail the same; sometimes margined with 
buffy; below ashy brown, sometimes lightly barred or 
streaked with dusky. Notes. Cach-cach-cach; hah, hah, 
hah, and other notes. 
Range.—Northern hemisphere; breeds in America from Maine, 
Great Lakes, Minnesota, and British Columbia northward; winters 
south to Cuba and Lower Californla. 
52. Vega Gull (Larus vege). Similar to No. 51, but 
back said to be darker; feet yellow. 
Range.—‘‘Bering Sea and adjacent waters; south In winter to Cal- 
ifornia and Japan.”’ (A. O. U.) 
53. California Gull (Larus californicus). L. 20. 
Ads. Similar to No. 54 but larger; a red spot near tip 
of lower mandible; white spot on outer primary, larger 
and nearerend. Yung. Similarto No. 54 but darker; 
tail nearly uniform fuscous. 
Range.—Western North America; breeds chiefly in interior, from 
Utah to Lat. 68°, 30’; winters from British Columbia to Mexico. 
Gulls. 
