KNOT; GRAY-BACK. 



234. Tringa canutus. W*/ 2 in. 



In summer mottled gray and buff above. 

 Under parts rufous without markings. In 

 winter gray and white above and white be- 

 low. Bill moderately stout. 



Note. Whistles not unlike those of sev- 

 eral species of sandpipers. 



Range. Breeds within the Arctic Circle. 

 Winters from the South Atlantic States 

 south to Patagonia. Rare in the interior. 

 PURPLE SANDPIPER. 



235. Arquatella maritima maritima. 9 in. 



In summer upper parts blackish, margined 

 with buff. Breast and sides purplish-slate. 

 In winter similar but without the buff edges 

 to the feathers. Frequents bold, shores. 



Note. A loud shrill whistle. 



Nest. A hollow on the ground. Eggs 

 gray, handsomely marked with brown. 



Range. Breeds in Arctic regions. Win- 

 ters south to Long Island. 

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