& 
964 GREY WAGTATIL. Cuass I. 
and whole under fide of the body are yellow: 
the quil-feathers are. dusky; thofe next the back 
edged with yellow. The colors of the female are 
- ufually more obfcure; and the black fpot on ane 
throat is wanting in that fex. 
The birds of this genus are much in motion: 
feldom perch : perpetually flirting their tails : 
fcream when they fly: frequent waters: feed on 
infects; and make their nefts on the ground. 
BILL 
