THE O. & O. SEMI-ANNUAL. 35 
Presently the familiar hum of Z. colubris brought us to a halt. 
After considerable search we were at last pleased to discover the old 
birds building a nest upon a small dead branch of a large maple. For 
some time we watched the old birds bringing bits of white substance, 
which they gathered from the under side of the leaves of a sycamore 
tree that stood near. 
After “spotting” this tree we continued on, finding nests of other 
species of more or less value. Just as we emerged from a small open 
grove I saw a Wood Thrush (Zurdus mustelinus) fly from her nest 
in a large maple. As I was climbing up to collect the eggs, I chanced 
to flush a Ruby-throat from her nest on the opposite side of the tree. 
Looking over, I saw the two pearly-white beauties which had been the 
object of my search for many a day. 
On.a neighboring twig, and not eight inches from this nest was an 
old last years one. The eggs were quite fresh and have not the gloss 
that most white eggs have. The nest was composed of downy sub- 
stance, yellowish-gray in color, covered on the outside with small pieces 
of lichen, which were held in place by a silky substance not unlike 
the spider’s nest. Knowing by good authority that the birds would 
build a second nest in the same locality, I thought of calling again 
in a few days. So, accordingly, on June 8th, I returned. A careful 
search of the tree did not reveal any nest, but far out on the end of a 
large branch of the next tree was the object of my hunt. On the 
same branch, and not five feet from the Ruby-throat’s nest, upon 
which the old bird was sitting, a pair of Acadian Flycatchers (£4. acad- 
icus) were very busy building a nest. 
The nest of Z. colubris, which is in my collection, is placed on a 
slanting twig, and is made of the same material as the first one taken 
from these birds. Notwithstanding the birds had twice been deprived 
of their nest and eggs, they determined to rear a brood in this locality, 
for in ten days they had the third nest built. This time I did not dis- 
turb them, but let them hatch their eggs and rear their young in peace. 
Visiting this place again on the eighth of June, ’88, I found their 
nest in a maple in the immediate vicinity. Ofa score or more nests 
collected by me, this is the most beautiful, being fastened to the side 
of the small twig, and from the ground looked very much like a moss- 
covered basket. The embryo was so large that the eggs were almost 
ruined in blowing. 
As all, who have had experience with the nesting of the Hummer, 
