The Chestnut-sided Warbler 
By T. GILBERT PEARSON 
The National Association of Audubon Societies 
Educationai Leaflet No. 85 
Among the most charming birds in the world are the members of 
that group classified as the family of Wood Warblers, containing about 
3ne hundred and fifty-five known species. They are found in no country 
but America. Seventy-four kinds occur in North America, and fifty-five 
'of these have been recorded in the United States. They are small birds, 
I measuring as a rule less than five and one-half inches from the bill-tip 
ito the tail-tip. Most of them are birds of the woods and thickets, a 
few only venturing into the open country. The Warbler’s bill is longer 
than that of most small birds and is well adapted for seizing the soft- 
bodied insects upon which it so largely preys. 
One of the most common members of the family in the Eastern States 
is the Chestnut-sided Warbler. The general appearance of the male is 
that of a particularly trim little bird with olive-green back and bright 
yellow crown ; the under parts are lighter, and the sides are marked by 
deep chestnut — that is the way the male looks in spring, at which season 
CHESTNUT-SIDED WARBLER ON NEST 
Photographed by Herbert K. Job 
