18 



KEY TO THE SHOKE BIRDS OF NORTH AMERICA. 



Section 4. Toes, 4, without web; bill, over 1.10 and 

 less than 1.90. 



Bill, decurved near tip; one or more of inner secon= 

 =*/ daries, almost entirely white ; upper tail coverts, not 

 white, barred with black; legs and feet, black. Spring 

 birds have black on the belly, and back, rufous brown 

 and black. Fall birds have the belly white and back 

 gray. 



Red-backed Sandpiper. 

 American Dunlin. 

 Trintja alpina pacifica. 



See page 49. 

 Tringa alpina pacinYa. 



Tringa ferruginea. 

 Tail and upper tail coverts. 



Bill, decurved near the tip: upper tail coverts, 

 white, banded with black or dark brown. 



Curlew Sandpiper. 



Trinrja ferruyinea. 

 See page 50. 



Bill, nearly straight; back, marked with tawny and 

 black; breast with numerous narrow, brown 

 streaks ; none of inner secondaries almost entirely 

 ichite; lower rump and upper tail coverts, 

 black ; the feathers more or less tipped with 

 buff. Two middle tail feathers loHger than 

 the others. 



Pectoral Sandpiper 

 Grass Bird. 

 Tringa maculata. 

 See page 45. 



Tringa maculata. 



Hill, nearly straight; back, dark; feathers edged with ashy or buff; breast, 

 grayish without brown streaks; one or more of inner secondaries almost 

 entirely white ; legs and feet, yellow in life, pale brown in dried skin. 



Purple Sandpiper. 



Tringa maritima. 

 See page 44. 



