KEY TO FAMILIES. — WATER BIRDS. 



23 



GROUP 6. 



Toes, three; a small web between toes, or, entirely 

 without web. 



^ 



-^ 



Bill, slender; wino;, about 5 inches; bill, about one inch; this is the only represen- 

 tative of this family with tliree toes, all otliers have four; tarsus, less tlian 1.50 inches long. 

 Family SCOLOPACID/E. {Calidris arennria.) Sanderling. Sandpiper. 



See page 107. 



Toes, three, partly wel>be<l; tarsus, over 3 inches long; general plumage, blai'k and 

 white; legs, pink red in life. Family RECURVIROSTRID/E. Stil». 



See page lOfi. 



