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 SCOLOPACIDA:. § (Calidris wrenaria.) 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.. Stilts. 
See page 106. 
