Vol. XVII 
1900 
SAUNDERS, Habtts of the Cerulean Warbler. 359 
building, the prospects were so favorable that I determined to visit 
the place again at a later date. In the meantime I found a pair 
near London, and after a short watch saw the female at work on 
the nest, which was then just begun, and could hardly be seen 
from the ground for leaves, though only seventeen feet up on 
a sloping limb of a basswood. By the 24th it was apparently 
finished but no bird was near, nor were they to be seen on 
the 28th, and on June 2nd, when the ascent was made, the nest 
was found completed but empty. It was situated on a limb two 
and one half inches in diameter just beside a vertical twig, but 
not held in place by anything except its own fibres attaching it 
‘to the main branch. 
On June 4, accompanied by Mr. H. Gould, I made the west- 
ern trip again, and after walking the necessary seven miles that 
evening we set the alarm clock for before daylight and turned in. 
Next morning We were in the woods long before five, and found, 
as before, many Ceruleans in full song, and immediately set to 
work, thinking we had easy work before us. But when, after two 
or three hours of steady work we met, and found that the total 
result was one nest building, we began to fear, and by ten o’clock 
were ready to give up. 
We then spent an hour or two in another woods, but came 
back to lunch on the scene of our disappointment, and while eat- 
ing we noticed a female, leisurely feeding and hopping around in 
a tree in front of us. By the time we were ready to move, she 
had covered two or three trees so often that we felt sure her nest 
was in one of them and we got on opposite sides of the clump of 
trees to watch her. Then it began to dawn on us why we had 
met with so little success in the morning, for it kept us both busy 
to keep track of the little greenish bird traveling high up among 
the green leaves. However, after a half hour or so she disap- 
peared in a place where one watcher would not have been able to 
guess at her whereabouts, but to the other, she was easy, and two 
steps to one side revealed the nest. A climb of forty-five feet in 
a leaning basswood reached the nest, which contained one egg 
only, but as we were not very sanguine of finding more we took 
it. | 
We then decided to hunt together, and the difficulty was solved. 
