Shore Birds. 



237. Pribilof Sandpiper (Arquatella ptilocnemis). 

 L. 10. Ads. Similar to No. 236 above but croww 

 much lighter; breast with a black patch. Yng. Re- 

 semble adult above but breast grayish indistinctly 

 streaked and with a pale buff band; belly white. 

 Winter. Similar to yng. but slaty gray above. 



Range.— "Breeding in the Pribilof Islands, Alaska, and migrat- 

 ing to coast of adjacent mainland south of Norton Sound." (A.O.U.) 



243a. Red-backed Sandpiper (Telidna alpina pa- 

 cifica). L. 8; B. 1.5; slightly curved. Ads. Belly 

 black; back chiefly rusty. Yng. Breast buffy, light- 

 ly streaked with dusky; belly white spotted with black; 

 back black, rusty, and buff. Winter. Above brown- 

 ish gray; below white; breast grayish, indistinctly 

 streaked. 



Range.— North America; breeds in Arctic regions and winters from 

 Gulf States and California to South America. 



246. Semipalmated Sandpiper (Ereunetes pusillus). 

 L. 6.3; B. .6 to .8. Toes webbed at base. Ads. 

 Above brownish gray and black; little or no 

 rusty; below white, breast indistinctly streaked. Yng. 

 Above with rusty and whitish margins; below white, 

 breast grayish no streaks. Winter. Above brownish 

 gray with black shaft streaks; below white. Notes, 

 weet-weet. 



Range. — Eastern North America; breeds in Arctic regions; winters 

 from Gulf States to South America. 



247. Western Sandpiper {Ereunetes occidentalism . 

 Similar to preceding but bill longer .8 to 1.2; ads. more 

 rusty above, breast streaks more distinct, and more 

 numerous. Notes. Call, a soft weet-weet; song, uttered on 

 the wing, "a rapid, uniform series of rather musical 

 trills." (Nelson.) 



Range, — North America, chiefly west of Mississippi Valley; breeds 

 in Arctic regions; winters from Gulf States to South America. 



248. Sanderling (Calidris arenaria). L. 8. Three 

 toes, tarsus scaled. Ads. Above rusty, black and 

 grayish; below white, breast spotted with black and 

 washed with rusty. Yng. Nape grayish, back black, 

 feathers with two white or yellowish white terminal 

 spots; below silky white. Winter. Above brownish 

 248. gray with dusky shaft streaks; below silky white. 



Range. — "Nearly cosmopolitan, breeding in Arctic and Sub- 

 Arctic regions, migrating, in America, south to Chili and Patagonia." 

 (A. O. U.) 



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