J 14 THE NATURAL HISTORY 
multip'ication would be fevercly felt, did not the 
friendly Irofts of winter, deliver us again from 
their devaflation. 
Genus 75 , MOTACILLA. 
Pennant has divided the Genus Motacilla, (and 
with rr afon,) into two Genera ; the one he calls 
the Wagtail, the other the Warbler. We /hall 
obferve his example, fo far, as to arrange this 
Genus under two divifions. 
DIVISION THE FIRST. THE WAGTAIL. 
The birds of this divififcf have a weak Header bill, {lightly 
notched at the tip. 
The tongue is jagged at the end. 
The legs are {lender. 
Their tails arc long, and frequently in motion, 
1 hey frequent the Tides of brooks, and are al- 
moft conftantly running; they feldom fly; but 
when they do fly to any diftance, it is in an un- 
dulatory, or wavy dire&ion; they rarely perch, 
their nefls are on the ground, and they make a 
twittering noife as they fly. 
The 
