KEY TO FAMILIES. WATER BIRDS. 



23 



GROUP 6. 



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

 without web. 



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

 tative of this family with three toes, all others have four; tarsus, less than 1.50 inches long. 

 Family SCOLOPACID/E. (Calidris arenaria.} Sanderling. Sandpiper. 



See page 107. 



Toes, three, partly webbed ; tarsus, over 3 inches long; general plumage, black and 

 white; legs, pink red in life. Family RECURVIROSTRID/C. Stilts. 



See page 106. 



