BIRDS OF DURHAM AND VICINITY. 
87 
September 19. They become abundant within a day or two of Octo- 
ber I, and continue in great numbers for two weeks. By the twentieth 
of October the majority are gone, though a few remain till the first of 
November, and I have seen one at Hampton, in company with Tree 
Sparrows, as late as November 30. A fortunate versatility of appetite 
enables them to change their diet when the supply of insects wanes. 
Their chief food while here consists of bayberries. Stomachs of late 
spring and early fall specimens contain little besides insects, but 
nearer the extremities of winter, these berries are eaten to a great 
extent. After the arrival of the large flocks in the fall, they almost 
constantly remain in the vicinity of patches of bayberry bushes, I 
have also observed them eating these berries in spring, even as late 
as the sixth of May. 
Dendroica maculosa. Magnolia Warbler. 657. 
The Black and Yellow- or Magnolia Warbler usually arrives between 
the tenth and sixteenth of May, and for a week or ten days is fairly 
common. It is one of the most vivacious of this active family, and is 
proportionally difficult to study in the field. It prefers evergreen 
trees or shrubbery, and generally is seen not far above the ground. 
This species does not breed here though it is a regular summer resi- 
dent nearer the White Mountains. The autumnal . movement is 
accomplished early, so silently that it often escapes notice altogether. 
Dendroica pennsylvanica. Chestnut-sided Warbler. 659. 
Chestnut-sided Warblers are common summer residents, having a 
preference for deciduous shrubbery and sprout land. I have noted 
their appearance on the eleventh of May and within two or three days 
of the arrival of the first comer they are usually plentiful. The nest 
is placed in the fork of a bush, near the ground, often in one of those 
tangles of brush and bushes which follow the clearing of a wood-lot. 
Early in September they fall in with the great troop of migrating 
warblers, which surge through our vvoodlands, and all together are 
soon off on their long journey. 
Dendroica castanea. Bay-breasted Warbler. 660. 
Bay-breasted warblers are regular migrants, but they are so few, 
that the best observers often fail to observe them as they pass. In 
three years^ residence in Durham, I have seen but one, and that was 
on the twentieth of May, There is a week, beginning according to 
