Class II. GREY WAGTAIL. 493 



black ; the breast, and whole under side of the 

 body are yellow ; the quil feathers are dusky ; 

 those next the back edged with yellow. The 

 colors of the female are usually more obscure ; 

 and the black spot on the throat is wanting in 

 that sex. 



The birds of this genus are much in motion ; 

 seldom perch ; are perpetually flirting their tails ; 

 scream when they fly ; frequent waters ; feed on 

 insects, and make their nests on the ground. 



