JAN., 1909. BIRDS OF ILLINOIS AND WISCONSIN CORY. 101 



SECTION 4. Toes, four, without web; bill, over i.io; and 

 less than 1.90. 





Red-backed Sandpiper. 



Winter. 



Pelidna alpina sakhalina 



Bill, decurved near tip; one or more of 



inner secondaries, 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. 



Pelidna alpina sakhalina. 



Red-backed Sandpiper. American Dunlin. 



See No. 118. 



Tail and upper tail coverts. 

 Pisobia maculata. 



Bill, nearly straight; back, marked 

 with tawny and black; breast with nu- 

 merous narrow, brown streaks; none of 

 inner secondaries almost 

 entirely white; lower rump 

 and upper tail coverts, 

 black, the feathers more or less tipped 

 with buff; two middle tail feathers, longer 

 than the others. Pisobia maculata. 



Pectoral Sandpiper. Grass Bird. 

 See No. 114. 



UNIVERSITY OF CALIFORNIA 



RIVERSIDE 



