Dendroica castanea 
1396, 
May 29. 
Lake Umbagog. 
Mason logging woods 
Building . 
Watrous this morning saw a female Bay-breast at work on 
a nest in the Mason logging woods. 
Lake Umbagog 
Near Pine Point. 
June 4 
We then retraced our steps to the knoll by the big boul¬ 
der where the Black-burnian and Bay-breasted Warblers are so numer¬ 
ous. Here we spent the remainder of the forenoon making an ex¬ 
haustive (and exhausting) search for nests, pounding hundreds of 
trees with an axe in the hope of starting the sitting birds. This 
plan failed utterly (we afterwards learned by actual experiment 
that these Warblers will not leave their nests even when the trees 
in which they are placed are pounded vigorously) for we did not 
find a single nest of any kind. There were at least a dozen Bay- 
breasts and an even greater number of Blackburnians singing on 
this knoll within an area of eight or ten acres. 
