Bird Families 
their migrations and choose a different course to return southward 
from the one they travelled over in spring. A few species are sum- 
mer residents, and one, at least, of this tropical family, the myrtle 
warbler, winters at the north. The habits of the family are not 
identical in every representative ; some are more deliberate and 
less nervous than others ; a few, like the Canadian and Wilson’s 
warblers, are expert flycatchers, taking their food on the wing, 
but not usually returning to the same perch, like true flycatchers; 
and a few of the warblers, as, for example, the black-and-white, 
the pine, and the worm-eating species, have the nuthatches’ habit 
of creeping around the bark of trees. Quite a number feed upon 
the ground. All are insectivorous, though many vary their diet 
with blossom, fruit, or berries, and naturally their bills are slen- 
der and sharply pointed, rarely finch-like. The yellow-breasted 
chat has the greatest variety of vocal expressions. The ground 
warblers are compensated for their sober, thrush-like plumage by 
their exquisite voices, while the great majority of the family that 
are gaily dressed have notes that either resemble the trill of mid- 
summer insects or, by their limited range and feeble utterance, 
sadly belie the family name. 
Bay-breasted Warbler. 
Blackburnian Warbler. 
Blackpoll Warbler. 
Black-throated Blue Warbler. 
Black-throated Green Warbler. 
Black-and-white Creeping Warbler. 
Blue- winged Warbler. 
Canadian Warbler. 
Chestnut-sided Warbler. 
Golden-winged Warbler. 
Hooded Warbler. 
Kentucky Warbler. 
Magnolia Warbler. 
Mourning Warbler. 
Myrtle Warbler. 
Nashville Warbler. 
Palm Warbler. 
Parula Warbler. 
Pine Warbler. 
Prairie Warbler. 
