are continually roufed by the motions of thofe animals ; 
its flight is remarkably undulating, and is confiderably ac~ 
celeraied by the continued jerkins of its tail j it makes but 
{hon flights at one time. 
During the breeding feafon it has a very pretty note, by 
which its retreat is difcovered ; it is one of thofe birds which 
purfue the hawk tribe, and on the appearance of which it 
gives the alaron by loud and repeated fcreams. It is in the 
habit of rolling in the duft, immediately after which it goes 
into the water, and in a few minutes comes out very clean ; 
it is infefled by an infed fimilar to that which attacks the 
fwallow, and we have no doubt but its rolling in the duft and 
wafhing, affifts in removing it ; in difleaing a Wagtail lately, 
one of thefe infeds crawled on the hand, to which it adhered 
fo firmly, that we were under the neceflity of ufing the point 
of the knife to remove iu 
