132 snow-bird. 



white; the tail is dusky slate, a little forked, the two exterior fea* 

 thers wholly white, which are flirted out as it flies, and appear then 

 very prominent; the bill and legs are of a reddish flesh color; the 

 eye bluish black. The female diflfers from the male in being con- 

 siderably more brown. In the depth of winter the slate color of 

 the male becomes more deep and much purer, the brown disap- 

 pearing nearly altogether. 



