THE PERCHING BirDs. 107, 
that may pass beneath, and sighting one, it glides 
gracefully downward, seizes the insect, and then 
returns to its perch with a graceful upward curve 
that shows how beautiful a movement flight may be. 
And again, it will often launch leisurely into space, 
and with outspread wings and upward toss of the 
head sing as lazily as it is possible to utter the sylla- 
bles péé-wéeé. The words, if we may call them such, 
are the same, but they have none of the snap of the 
phcebe. 
Wood pewees are found in the West and South 
and in British Columbia, migratory like the Eastern 
bird, and much the same in all respects. 
The Yellow-bellied Flycatcher is rare in the Mid- 
dle States, not common in New England, and found 
nesting in Canada. It is migratory. It has “gone 
against the rules” more than once and stayed all sum- 
mer in New Jersey, even nesting there; and Warren, 
in “Birds of Pennsylvania,” gives various parts of 
that State as its summer home. The song is rather 
pleasing and more elaborate, as I have heard it, than 
it is described by Nuttall even. The nest that I have 
seen was in a tangle of Virginia creeper that clung toa 
small tree, and was fully twenty feet from the ground. 
When the April sunshine has caused the leaf-buds 
to open, and as we look through the woods we see 
a pale-green shimmer, and sunlight penetrating to 
where in a few weeks it will be effectually shut out,— 
at such atime and in such a place you will see a 
small greenish-gray flycatcher,—the Acadian,—now 
sailing from tree to tree, now pitching down from 
higher to lower perches, and again mounting up- 
