Part 11

The nest, when finished, is a symphony of pale buff and silvery grays that shade imperceptibly toward the buff touches on the under parts of the warbler and are lighted as with a gleam of sunlight by the bright yellow of the remaining plumage. Yet this bright yellow has a greenish tint that is deepened in the tender green of the young shoots of the barberry, while the yellow itself is again reproduced in the blossoms. No wonder this lovely little singing-bird loves a barberry bush for its nest. It finds protection and an artistically satisfying color scheme in the same bush.

The silvery grays of the nest are the fine, silky, fibrous inner bark of the milkweed, whose last year’s stems are shredded by wind and storm in time for the nest-building. These barberry-bush-building yellow warblers with whom I have been more or less acquainted for a quarter of a century seem to care for little else for material, though sometimes they make the fern fuzz more adhesive with caterpillars’ silk and line with a few horsehairs and soft feathers.

Yet though these nests have been invariable in material they have varied otherwise. Some have been so firmly woven and the material so stoutly packed as to defy the storms of a winter or two. Others have been so frail as hardly to be found when the leaves are off. Perhaps these slight nests are made by birds that were nestlings of the previous year and have not yet learned the complete art of nest-building.

Once I found one whose makers were skilled indeed. Instead of placing it firmly in a crotch and building up with the fern wool within a netting of fiber wound from twig to twig, as is the usual method, these had launched boldly into a new architecture. Perhaps they had neighbored the year before with a vireo. Anyway, they took the vireo’s plans and built a yellow warbler’s nest on them, hanging it from a nearly horizontal barberry fork, and finishing a fine, firm, pensile nest, vireo style, out of yellow warbler material. I never found this nest’s successor, and I am not sure whether, having found they could do it, they abandoned the type for the old home style, or whether something happened to the birds, and thus the warbler world lost budding genius.

Only one other nest have I found that seemed to be in any way abnormal, and this, unlike the pensile nest, seems to have had a very definite reason for its abnormality. The hollow part which had contained the eggs and young was in no wise different from that of all other warblers’ nests. It was the depth and firmness of the foundation which surprised me. This was built up to the height of an ordinary yellow warbler’s nest before the real nest began at all, and (the young had flown) I promptly took it home and dissected it.

Then the murder was out. The extra height had been added to the structure to circumvent the villainy of a cowbird. The cowbird lays her eggs in nests of birds that are smaller than herself and there leaves them to be hatched. She is partial to yellow warblers’ nests because the eggs that belong there are much like hers in coloring, though smaller, and the fraud is less likely to be detected. When hatched the young cowbird is so much larger and stronger that it starves out the other nestlings or crowds them out. The nest-builders in the main are foolish enough to bring up this murderous changeling; hence cowbirds are perpetuated. Perhaps these warblers had had one experience.

Anyway, finding the cowbird’s egg in their nest, they had promptly roofed it over with fern wool and fiber, built up the sides to correspond to the addition, and gone on with their housekeeping. Here was evidence of prompt action in an emergency in nest-building. I do not think it possible for the birds to have lifted the cowbird’s egg over the side of their nest and to have dropped it on the ground, which would have been the quickest way of getting rid of it. A yellow warbler’s nest “tumbles home” a bit at the top, as does the hull of a yacht, and I do not think their slender claws could grasp the egg and get it over that lip. Instead, they had done what they could,--imprisoned the intruder egg where it could not hatch.

I found it there, addled and nearly dried up within, and I rejoiced. The cowbird is a light-o’-love and abandons children on other people’s doorsteps. All such should be put in a pie. Since English sparrows became so plentiful the cowbird has shown a decided partiality for their nests for its abandoned offspring. I found a cowbird’s egg with those of an English sparrow that nested in a crevice right over my front door last spring. If cowbirds must behave in this nefarious manner it is not so bad to find them choosing the English sparrows for their dupes. The surprising part of it is to find the cowbird with sufficient courage to come in under the porch.

I’d like to watch a young cowbird growing up in a nestful of young English sparrows. The tender nestlings of the yellow warbler have no show, but I have an idea that here Greek would meet Greek, and after the tug-of-war the cowbird would be among those not present. Perhaps in the falling out both would fall out, at which most of us who love birds would not grumble.

SOME CROWS I HAVE KNOWN

Already the robins that piped such a deafening morning chorus all about us last June are swirling in great flocks about the Florida everglades, getting up a Christmas spirit by filling their crops with holly berries and practicing spring songs, and perhaps a little spring love-making in the waxy shadows of the mistletoe bough.

But not all of them. Yesterday, at sunset, I heard one that had not joined the innumerable throng. Instead, he lingers to take his Christmas dinner in New England, his holly the red-berried alder, his mistletoe black instead of white, with the crowded fruit of the buckthorn. Like his mates, a thousand miles away, he, too, sang a faint little winter song that was like an echo of his summer jubilate, a triumphant, light-hearted tune indeed, but not heartily sung. Twilight gloomed the deep pine growth where we were, and though the fires of a November sunset burned red and angry in the sky, they warmed the grove only to the eye, while the keen north wind that had blowzed the sky with clouds all day seemed to be seeking shelter there with us. He, too, whistled in such keen sibillation that the faint oak-leaf rustle from the hillside sounded like chattering teeth.

The robin’s faint song may have been one of contentment with his lot, or one of evening praise for as many mercies as he had received, but it sounded far more, in that light and that biting air, like the boy who whistles at night on the long and lonesome road to keep his courage up. Then the song died away in his throat, for across the angry crimson of the west flitted silhouetted black wings, and a pair of crows lighted among the thick boughs of the higher pines to roost for the night.

The robin muttered “tut, tut!” somewhat hysterically and slipped away to safer shelter deep among the low boughs and denser shadow of a tree on the edge of the open pasture. No doubt he recognized hereditary enemies of his race, and though he was tough enough to dare a northern winter, was unwilling to take chances with the strong black bills of these reckless freebooters of the wilderness. And he was right. Crows rarely eat grown robins, for they cannot catch them, but the tender, half-fledged nestlings are the mainstay of many a crow saturnalia.

Only too well do I remember an orgy of this sort. It was late May and the scent of the apple blossoms filled all the orchard with delight, just as the robins, morning and evening, filled it with song. They sang for every cloud that crossed the sky and piped up now and then in the full sunshine. How they found time for it all it is hard to tell, for every nest was full of young birds that eat almost their weight in hearty food each day.

One day the tunes changed. Coming into the farthest corner from a woodland trip I heard from some ancient, neglected trees, such as the robins always love and in which were grouped three or four nests, wild shrieks of anger and dismay from a whole chorus of robins. Coming nearer I could hear crow voices in guttural undertones, croaking ghoulishly.

The crow has a language, not exactly of words but of inflections and intonations, which express the primal emotions pretty clearly. I always think I know what he means, though undoubtedly his crow hearers understand the finer shades of inflection better than I do.

There is the shout of warning which says plainly, “Look out, there is trouble right ahead of you!” A similar shout, but with different inflection, says, “Come on. Come on. I’ll show you something worth seeing.” There is the yell of derision and defiance with which a flock drives an owl through the forest; there is the gentle cooing croak with which mated birds do their love-making. There is the cry of terror and the suppliant call for food from the full-grown young. There is also a peculiarly devilish croak of satisfaction which they make only when feasting on the tender nestlings of pasture birds.

This I knew, and I rushed to the rescue of my young robins, but I was much too late. The feast was well along toward its conclusion and the nests were nearly empty. The parent birds, reënforced by others of the neighborhood, were doing their best. They plunged and darted at the marauders, plucked and clawed at them, but not one whit could they stir them, nor did they leave at my approach, and it took vigorous and well-directed volleys of stones from a near-by heap to drive them away. Then they went heavily, as if gorged to such repletion that they could hardly fly.

I went on home sick at heart, and vowing shot-gun vengeance on all crows thereafter; and it was not until I had carved the chicken for dinner that I realized that there might be extenuating circumstances. For, after all, the crows had as much right to robin for their dinner as I had to chicken for mine.

Crows certainly are responsible for a large amount of infant mortality among young birds in the nesting season, however, and to my mind it is the greatest crime of which these black robbers stand guilty. It is for this reason that the crow is so well hated by smaller birds, and I don’t doubt it is this consciousness of guilt that makes him hang his head and flee away before the attack of the least of them. Blackbird and kingbird alike will send him flapping in shamed haste for the big wood, and it makes no difference whether or not he has attempted to burglarize their homes or slaughter their children.

Just as a known pickpocket is railroaded out of town by the police, whether guilty of present misdemeanor or not, so the kingbird sends flying any crow that crosses his path during the nesting season. You will hear the strident, half-hissing scream of rage on the part of the kingbird, see him launch himself from the air above and strike the back of the flapping crow with a thump that perhaps makes the feathers fly. The crow never attempts to strike back. He merely hangs his head and scuttles the faster for the tall timber where is release from this torment. I’ve never known the kingbird or any other indignant small bird to do the crow material harm; but he certainly sends him flying.

One August, traversing a lonely swamp, I heard a great commotion among crows over in its duskiest, farthest corner. Slipping quietly up, I found a number of them swooping about another, which sat on a low limb within a few feet of the ground. This crow was making beseeching cries, like those of a greedy youngster which still hoped to be fed, and I thought this was the case at first, for, though by August all young crows have long been full grown, the old birds continue to keep oversight of them. I had no sooner come within sight than the keen birds saw me, and away they all went except the supposed youngster, who still kept his perch and his silence, nor did he attempt to move as I approached and finally picked him off his perch.

For he was no youngster, this crow, but was blind, old, and emaciated. I think from the appearance of his eyes that he had been blind for a considerable time, and the interesting question arises as to how he had lived thus far. Surely he could not have found food for himself thus for any long period of time, so perhaps the other crows had fed him right along.

How old crows grow to be I do not know, but whatever extreme age they attain this one was it. I took him home and gave him the freedom of the yard, which he accepted. I fed him, and he seemed to be glad to have a foster parent and to have no fear. But his presence was fiercely resented by another family, and that was the kingbirds that had nested in a neighbor’s apple tree. The young were grown up long ago. In fact, the kingbirds had not been seen about for some time, but the crow had no sooner appeared than they came darting into the yard and savagely attacked him.

Again and again I had to rescue him from their fury, though he was the meekest crow I have ever seen, and they no longer had young to defend. Kingbirds go to bed at early dusk as a rule, but even after dark and long after I had put my foundling under shelter for the night, this pair could be heard swearing away to themselves up in the top of their apple tree, waiting for one more whack at him. Kingbirds leave us for the south about the first of September. I am quite sure this pair delayed their migration for some days that year, hating to give up their daily harrying of my ancient and toothless old crone of a crow.

He died, of old age no doubt, before the winter, seeming to fade gently away, as a patriarch should. When, about the fifth of May the next year, the kingbirds came back, they were noticed looking our back yard over very minutely several different times. They remembered the crow and were prepared to drive him over into the next country before they began their nesting.

The patriarch was so old he could not see when I found him. Box and Cox were so young when I lifted them from their nest that they had never seen. They had scarcely kicked their blue-green, brown-splashed eggshells overboard when I climbed to their great, strongly-built home in the upper limbs of a good-sized pine. It had a foundation of stout sticks topped with smaller ones, and within these a well-woven cup of slender twigs lined with grapevine bark and the soft fiber of the red cedar.