arial SAUNDERS, Hlabits of the Cerulean Warbler. 361 
male in a favorable location, those we saw being in the tops of 
very tall elms, where it was impossible to watch them well, and 
where we could not have got the nest even if we found it. Stroll- 
ing along, however, one of us suddenly saw a female and watched 
her to the nest before the other got a glimpse of her at all. This 
nest was in a sloping basswood, forty feet from the ground and 
four or five feet from the trunk, on a heavy ascending limb which 
measures one and three fourths inches in diameter just below the 
nest, which is built at the offsetting of a seven eighth inch branch, 
beside which are two small twigs whose leaves sheltered the 
_hest from above. It measures 13 inches high on the outside and 
22 wide; inside it is 1 inch deep by 13 wide. The composition 
of the nest is identical with the one already described, except 
that the lining, which was entirely black in the other, is in this 
one red and is made of red cowhairs, red rootlets and a very few 
white horsehairs. Incubation was one half completed, and the 
four eggs measure by average, .66X.53 inches, the extremes 
being, .65X.53 and .69X.53. The coloring is similar to that 
of those already described with a few spots of darker brown in 
the ring. This nest contained a Cowbird’s egg also, and the 
five eggs filled the shallow nest exceedingly full. 
We soon located another male, and found his mate within ten 
minutes and the nest shortly after. This was in an oak, and only 
twenty-three feet from the ground. The nest contained four eggs 
of the usual ground color, many of the spots being large and of a 
lighter brown color. Incubation was so far advanced that it was 
found impossible to make good specimens of them. This ended 
the day, which had yielded us three sets of four, one nest with 
one egg, and two nests building. 
At London, on June 11, the nest just commenced on June 3 
was found to be covered by the-female; and on June 16 it was 
taken. It was in a maple thirty-five feet from the ground, and 
six feet out on an ascending limb. Sitting at work just below the 
nest-limb I found the trunk of the tree, on a level with my eyes, 
was two inches in diameter, which gave no chance to work from 
above the nest. However, by the use of a long-range tree pruner, 
and very careful work, I managed to get the limb safely off and 
drew it in. The nest was situated on a horizontal branch just 
