Shore Birds. 
226. Black-necked Stilt (Aimantopus mexicanus). 
L. 15; Tar 4.10. Ad. o. Forehead, lower back, 
and underparts white; crown, hindneck, upper back, 
and wings black. Ad. 2. Similar, but upper back 
and scapulars grayish brown. Yung. Similar to Q, 
but brown and black feathers lightly margined with 
buffy. Notes. A sharp, rapidly uttered 7p-7p-7 when 
flying; a hoarse &-r-r-r-r-ing note when on the ground. 
Range.—Temperate and tropical America; breeds north to Gulf 
States, (locally and rarely in Mississippi Valley to Minnesota) and 
California; winters from southern California and West Indies to 
Horner South America; rare east of Mississippi except in Gulf 
tates. 
286. American Oyster-catcher (Hamatopus pallia- 
tus). L. 19. Ads. Base of tail and longer upper 
tail-coverts white, shorter coverts and all back black- 
ish brown; white in wings conspicuous in flight. 
Yng. Similar but feathers above with buffy margins. 
Notes. A sharp eep, eep. 
Range.— Temperate and tropical America; breeds on sea coasts 
only, north to Virginia and western Mexico; winters south of United 
States to South America; casual north to Nova Scotia. 
286.1. Frazar Oyster-catcher (Hamatopus fra- 
zgari). Similar to No. 286, but darker above, black 
breast passing into white belly through a mottled 
black and white band; upper tail coverts with brown 
markings. 
Range. —‘‘Lower Callfornia (both coasts), north to Los Coronados 
Islands.”’ (A. O. U.) 
287. Black Oyster-catcher (Hamatopus bachmant). 
L. 17. Ads. Black. Yung. Somewhat browner. 
Notes. A musical, piping whistle. 
Range.—‘‘Paclfic coast of North America from Aleutian Islands to 
La Paz, Lower California.” 
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