key to the water birds ok florida, 

 Subgenus PELIDNA Cuv. 



279 



TRINGA ALPINA PACIFICA (Cones). 

 Red=backed Sandpiper. 



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Adult in snniincr : The feathers on the top of the head and 

 back bright rufous brown heavily blotched with black on the 

 central part of each feather ; throat whitish ; breast streaked 

 with black ; belly black on the upper part, becoming white on 

 _^ the lower belly and crissum ; bill black. 



Adnlt in winter: Upper parts gray, slightly mottled; 

 throat white; breast gray, the shafts of the feathers dark 

 brown : l)elly and under tail coverts pure white ; a faint dull 

 white superciliary line. 

 Length, 8; Wing, 4.75 ; Tarsus, i.io: Bill, 1.65. 



Ranges throughout North x\merica, breeding far northward. It occurs 

 on the Atlantic coast during migrations. 



The eggs are buffy white, sometimes bhiish white, mottled with chocolate 

 at the larsfer end. 



Subgenus ANCYLOCHEILUS Kaup. 

 Genus EREUNETES Illiger. 



EREUNETES PUSILLU5 {Linn. 

 Semipalmated Sandpiper. 



Ereunetes pi 

 (foot). 



Adult in summer: Heavily marked with dark brown 

 and tawny on the top of the head and back; forehead 

 whitish ; under parts and throat white ; breast mottled with 

 grayish ; belly white ; toes luitJi small web. 



Adnlt in winter: Upper parts grayish, mottled witli brown 

 on the head, and the feathers showing dark brown edged with 

 white on the back; throat white ; breast very faintly washed 

 with gray, which is sometimes very indistinct ; belly and 

 under tail coverts white ; toes with small %veb. 

 Lengtli. 6.25 : Wing, 3.70: Tarsus, .75 ; Bill, .80. 



Ranges from Labrador southward to the West Indies, and is common on 

 the Atlantic coast during migrations. This species ma}^ be distinguished 

 from the Least Sandpiper bv the partly webbed toes. 



