Prior to that discovery I had supposed, with most people, that all birds roost in trees and bushes. Later researches have proved how wide of the truth one’s unverified hypotheses may be. A week or so afterward, while strolling one evening at dusk through a favorite timber-belt, I noticed the snowbirds, or juncos, darting up from the leaves and bushes and small brush-heaps, beneath which they had found dainty little coverts from the storm. In many places crooked twigs and branches, covered with leaves, lay on the ground, leaving underneath small spaces overarched and sheltered, and into these cosey nooks the juncos had crept for the night. No enemies, at least in winter, would find them there, and their hiding-places were snug and warm. Long after dark I lingered in the woods, and everywhere startled the snow-birds from their leafy couches. At one place a whole colony of them had taken lodgings. When my passing frightened them away, they flew through the darkness into the neighboring trees. After waiting at some distance for several minutes, I returned to the spot, and found that some of the birds had gone back to their bedrooms on the ground.
In my nocturnal prowlings through the fields and lowlands, I have frequently frightened the meadowlarks from the grass, and that long before nest-building or incubation had begun. Of course, they were recognized by their nervous alarm-calls, as well as by the peculiar sound of their fluttering wings. What surprises me beyond measure is that they so often select low, boggy places for their roosts, instead of the dry pleasant upland slopes. But there is no accounting for tastes in the bird world. The grass-finches and lark-sparrows, like their relatives just mentioned, seek little hollows in the ground for bed-chambers, usually sheltered by grass tufts.
Long before day, one April morning, I made my way to the marsh so frequently mentioned in this volume. The moon was shining brightly in the southern sky. Early as it was—for as yet there was no sign of daybreak—the silvery trills of the song-sparrows rose from the bushes like a votive offering to the Queen of Night. From one part of the swamp a sweet song would ring out on the moonlit air, and would at once be taken up by another songster not far away. Then another would chime in, and another, until the whole enclosure was filled with the antiphonal melody. A silence would then fall upon the marsh like a dream-spirit, to be broken soon by another outburst of minstrelsy; and thus the nocturne continued until day broke, and it merged into the glad matin service.
But my object is to tell about bird roosts rather than about bird music. When I reached the farther end of the marsh, several sparrow songs came up from the ground. I walked with a tentative purpose toward a spot whence a song came, when the little triller sprang up affrighted. The same experiment with a number of other songsters brought a like result in each case, proving beyond doubt, I think, that at least some of the song-sparrows roost on the ground, and begin their matins before they rise from their couches, so anxious are they to put in a full day of song.
On the same morning—it was still before daybreak—a bevy of red-winged blackbirds, which had been roosting in the long grass, flew up with vociferous cries and protests at the rude awakening I had given them, just when they were enjoying their morning nap. Blame them who will for making loud ado, for there are many people who would do the same under similar provocation. Thus it will be seen that many birds sleep on the ground. My investigations lead me to this conclusion: As a rule, those birds which nest on or near the ground, and spend a considerable portion of their time in the grass, like the meadow-larks and song-sparrows, roost on the ground, while others find bushes and trees more to their taste. Still, there are exceptions to this rule; for on several occasions, while bent on my nocturnal prowlings, I have driven the turtle-dove from the ground, although this bird usually roosts in the thorn-trees and willows.[4]
The robins choose thick trees and even wild rose-bushes for roosts. In the apple-trees and pines of a neighbor’s yard across the fields these birds find sleeping-apartments early in the spring, before nest-building is begun, for a perfect deluge of robin music often pours from that locality, both morning and evening.
The white-throats, wood-sparrows, and brown thrashers make use of the thick thorn-trees of the marsh for lodgings. They flutter about in sore dismay as I approach, until I start back, lest they should impale themselves on the sharp thorns. Sometimes the thrasher ensconces himself for the night in the brush-heaps which the wood-choppers have made on the slopes, making his presence known by his peculiar way of scolding at my officious intrusion.
One cannot help admiring the wise forethought displayed by many birds in creeping into the thick thorn-bushes at night, where they may sleep without fear of attack from their nocturnal foe, the owl. Full well they seem to know he cannot force his bulky form through the thick network of branch and thorn. How he must gnash his teeth with rage—if owls ever do that—when he espies his coveted prey sleeping peacefully just beyond the reach of his talons! Still, it sometimes happens that even a small bird ventures into too close quarters in these terrible prickly bushes; for I once found a dead sparrow completely wedged in among the fierce thorns, where it had evidently been caught in such a way as to prevent its escape.
Something over a year after the preceding facts were published, I was seized with a whim to resume my investigations on bird roosts. One of my nocturnal rambles seems to be deserving of somewhat minute description. It was a delightful evening of early spring, with a warm westerly breeze stirring the bursting leaves. The sun had set, and the dusk was falling over fields and woods. The bright moon, a little more than half full, lengthened out the gloaming and added many precious minutes to the singing hours of the birds. Such a woodland chorus as I was permitted to listen to that evening! It was a rare privilege. How the wood-thrushes vied with the towhee buntings! Which would sing the latest? That seemed to be the question. At length there were several moments of silence, and I supposed all the birds had gone to sleep, when a white-throated sparrow and a wood-pewee struck in with their sweet strains; and so the chorus continued until it was really night. The wood-thrushes, I think, got in the last note of the twilight serenade.
Before it had become quite dark, I espied a wood-thrush sitting in the fork of a dogwood-tree, looking at me in a startled way; but she did not fly. I walked off some distance, remained awhile, and then returned, to find her still in her place. Then I strolled about until night had fully come; the moon shone brightly, so that it was not dark. When I went back to the dogwood-tree, the speckled breast of the thrush was still visible in the fork which she had chosen for her bed-chamber, and I wished her pleasant dreams.