III
A SPARROW'S MISTAKE
If one has always built one's nest upon the ground, and if one comes of a race of ground-builders, it is a risky experiment to build in a tree. The conditions are vastly different. One of my near neighbors, a little song sparrow, learned this lesson the past season. She grew ambitious; she departed from the traditions of her race, and placed her nest in a tree. Such a pretty spot she chose, too—the pendent cradle formed by the interlaced sprays of two parallel branches of a Norway spruce. These branches shoot out almost horizontally; indeed, the lower ones become quite so in spring, and the side shoots with which they are clothed droop down, forming the slopes of miniature ridges; where the slopes of two branches join, a little valley is formed which often looks more stable than it really is. My sparrow selected one of these little valleys about six feet from the ground, and quite near the walls of the house. Here, she has thought, I will build my nest, and pass the heat of June in a miniature Norway. This tree is the fir-clad mountain, and this little vale on its side I select for my own. She carried up a great quantity of coarse grass and straws for the foundation, just as she would have done upon the ground. On the top of this mass there gradually came into shape the delicate structure of her nest, compacting and refining till its delicate carpet of hairs and threads was reached. So sly as
the little bird was about it, too,—every moment on her guard lest you discover her secret! Five eggs were laid, and incubation was far advanced, when the storms and winds came. The cradle indeed did rock. The boughs did not break, but they swayed and separated as you would part your two interlocked hands. The ground of the little valley fairly gave way, the nest tilted over till its contents fell into the chasm. It was like an earthquake that destroys a hamlet.
No born tree-builder would have placed its nest in such a situation. Birds that build at the end of the branch, like the oriole, tie the nest fast; others, like the robin, build against the main trunk; still others build securely in the fork. The sparrow, in her ignorance, rested her house upon the spray of two branches, and when the tempest came the branches parted company and the nest was engulfed.
Another sparrow friend of mine met with a curious mishap the past season. It was the little social sparrow, or chippie. She built her nest on the arm of a grapevine in the vineyard, a favorite place with chippie. It had a fine canopy of leaves, and was firmly and securely placed. Just above it hung a bunch of young grapes, which in the warm July days grew very rapidly. The little bird had not foreseen the calamity that threatened her. The grapes grew down into her nest and completely filled it, so that, when I put my hand in, there were the eggs sat upon by the grapes. The bird was crowded out, and had perforce abandoned her nest, ejected
by a bunch of grapes. How long she held her ground I do not know; probably till the fruit began to press heavily upon her.
IV
A POOR FOUNDATION
It is a curious habit the wood thrush has of starting its nest with a fragment of newspaper or other paper. Except in remote woods, I think it nearly always puts a piece of paper in the foundation of its nest. Last spring I chanced to be sitting near a tree in which a wood thrush had concluded to build. She came with a piece of paper nearly as large as my hand, placed it upon the branch, stood upon it a moment, and then flew down to the ground. A little puff of wind caused the paper to leave the branch a moment afterward. The thrush watched it eddy slowly down to the ground, when she seized it and carried it back. She placed it in position as before, stood upon it again for a moment, and then flew away. Again the paper left the branch, and sailed away slowly to the ground. The bird seized it again, jerking it about rather spitefully, I thought; she turned it around two or three times, then labored back to the branch with it, upon which she shifted it about as if to hit upon some position in which it would lie more securely. This time she sat down upon it for a moment, and then went away, doubtless with the thought in her head that she would bring something to hold it down. The perverse paper followed her in a few seconds. She seized it
again, and hustled it about more than before. As she rose with it toward the nest, it in some way impeded her flight, and she was compelled to return to the ground with it. But she kept her temper remarkably well. She turned the paper over and took it up in her beak several times before she was satisfied with her hold, and then carried it back to the branch, where, however, it would not stay. I saw her make six trials of it, when I was called away. I think she finally abandoned the restless fragment, probably a scrap that held some "breezy" piece of writing, for later in the season I examined the nest and found no paper in it.