.BIRD’S-NESTING 111 
with light rufous markings. It was so overshadowed 
with wintergreen leaves and aronia and bunch- 
berries that, even after the Artist had pointed out 
the place to me, it was with very great difficulty that 
I found it. 
As we crossed the marsh, I heard the song of the 
olive-backed thrush, which sounds to me like a cross 
between the notes of the wood thrush and the 
strange harp-chords of the veery or Wilson thrush. 
In another part of the bog sang the rare Nashville 
warbler, whose nest we have yet to find. Its song 
starts like the creak of the black-and-white warbler 
and ends like a chipping sparrow. In a marsh be- 
yond the sphagnum bog, I found the nest of a Mary- 
land yellowthroat, set in a yellow viburnum shrub 
some six inches from the ground. This nest is usually 
on the ground. It was set just as a gem is set in a 
ring, the setting consisting of leaves which come up 
into five or six points. Held by the points is a little 
cup of grass. The eggs were the most beautiful we 
saw that day — of a pinkish-white with a wreath of 
chestnut blotches around the larger end. On the far- 
ther side of the marsh, a white-throated sparrow flew 
out from in front of me; and after a long search I 
found its nest —a little moss-rimmed cup of gray- 
green, yellow grass, containing four eggs of a faint 
blue clouded with chestnut, which was massed in 
large blotches at the larger end. With the four eggs 
was a dumpy young cow-bird, that fatal changeling 
which is the death of so many little birds. In this 
case we saved four prospective white-throated spar- 
