Near my study there used to stand several old apple-trees that bore fair crops of apples, but better crops of birds. Every year these old trees were the scenes of bird incidents and bird histories that were a source of much interest and amusement. Young trees may be the best for apples, but old trees are sure to bear the most birds. If they are very decrepit, and full of dead and hollow branches, they will bear birds in winter as well as summer. The downy woodpecker wants no better place than the brittle, dozy trunk of an apple-tree in which to excavate his winter home. My old apple-trees are all down but one, and this one is probably an octogenarian, and I am afraid cannot stand another winter. Its body is a mere shell not much over one inch thick, the heart and main interior structure having turned to black mould long ago. An old tree, unlike an old person, as long as it lives at all, always has a young streak, or rather ring, in it. It wears a girdle of perpetual youth.

My old tree has never yet failed to yield me a bushel or more of gillyflowers, and it has turned out at least a dozen broods of the great crested flycatcher, and robins and bluebirds in proportion. It carries up one large decayed trunk which some one sawed off at the top before my time, and in this a downy woodpecker is now, January 12, making a home. Several years ago a downy woodpecker excavated a retreat in this branch, which the following season was appropriated by the bluebirds, and has been occupied by them nearly every season since. When the bluebirds first examined the cavity in the spring, I suppose they did not find the woodpecker at home, as he is a pretty early riser.

I happened to be passing near the tree when, on again surveying the premises one afternoon, they found him in. The male bluebird was very angry, and I suppose looked upon the innocent downy as an intruder. He seized on him, and the two fell to the ground, the speckled woodpecker quite covered by the blue coat of his antagonist. Downy screamed vigorously, and got away as soon as he could, but not till the bluebird had tweaked out a feather or two. He is evidently no fighter, though one would think that a bird that had an instrument with which it could drill a hole into a tree could defend itself against the soft-billed bluebird.

Two seasons the English sparrows ejected the bluebirds and established themselves in it, but were in turn ejected by myself, their furniture of hens' feathers and straws pitched out, and the bluebirds invited to return, which later in the season they did.

The new cavity which downy is now drilling is just above the old one and near the top of the stub. Its wells are usually sunk to a depth of six or eight inches, but in the present case it cannot be sunk more than four inches without breaking through into the old cavity. Downy seems to have considered the situation, and is proceeding cautiously. As she passed last night in her new quarters I am inclined to think it is about finished, and there must be at least one inch of wood beneath her. She worked vigorously the greater part of the day, her yellow chips strewing the snow beneath. I paused several times to observe her proceedings. After her chips accumulate she stops her drilling and throws them out. This she does with her beak, shaking them out very rapidly with a flirt of her head. She did not disappear from sight each time to load her beak, but withdrew her head and appeared to seize the fragments as if from her feet. If she had had a companion I should have thought he was handing them up to her from the bottom of the cavity. Maybe she had them piled up near the doorway.

The woodpeckers, both the hairy and the downy, usually excavate these winter retreats in the fall. They pass the nights and the stormy days in them. So far as I have observed, they do not use them as nesting-places the following season. Last night when I rapped on the trunk of the old apple-tree near sundown, downy put out her head with a surprised and inquiring look, and then withdrew it again as I passed on.

I have spoken of the broods of the great crested flycatchers that have been reared in the old apple-tree. This is by no means a common bird, and as it destroys many noxious insects I look upon it with a friendly eye, though it is the most uncouth and unmusical of the flycatchers. Indeed, among the other birds of the garden and orchard it seems quite like a barbarian. It has a harsh, froglike scream, form and manners to suit, and is clad in a suit of butternut brown. It seeks a cast-off snakeskin to weave into its nest, and not finding one, will take an onion skin, a piece of oiled paper, or large fish scales. It builds in a cavity in a tree, rears one brood, and is off early in the season. I never see or hear it after August 1st.

A pair have built in a large, hollow limb in my old apple-tree for many years. Whether it is the same pair or not I do not know. Probably it is, or else some of their descendants. I looked into the cavity one day while the mother bird was upon the nest, but before she had laid any eggs. A sudden explosive sound came up out of the dark depths of the limb, much like that made by an alarmed cat. It made me jerk my head back, when out came the bird and hurried off. For several days I saw no more of the pair, and feared they had deserted the spot. But they had not; they were only more sly than usual. I soon discovered an egg in the nest, and then another and another.

One day, as I stood near by, a male bluebird came along with his mate, prospecting for a spot for a second nest. He alighted at the entrance of this hole and peeped in. Instantly the flycatcher was upon him. The blue was enveloped by the butternut brown. The two fell to the ground, where the bluebird got away, and in a moment more came back and looked in the hole again, as much as to say, "I will look into that hole now at all hazards." The barbarian made a dash for him again, but he was now on his guard and avoided her.

Not long after, the bluebirds decided to occupy the old cavity of the downy woodpecker from which I had earlier in the season expelled the English sparrows. After they had established themselves here a kind of border war broke out between the male bluebird and the flycatchers, and was kept up for weeks. The bluebird is very jealous and very bold. He will not even tolerate a house wren in the vicinity of his nest. Every bird that builds in a cavity he looks upon as his natural rival and enemy. The flycatchers did not seek any quarrel with him as long as he kept to his own domicile, but he could not tolerate them in the same tree. It was a pretty sight to see this little blue-coat charging the butternut through the trees. The beak of the latter would click like a gunlock, and its harsh, savage voice was full of anger, but the bluebird never flinched, and was always ready to renew the fight.

The English sparrow will sometimes worst the bluebird by getting possession of the box or cavity ahead of him. Once inside, the sparrow can hold the fort, and the bluebird will soon give up the siege; but in a fair field and no favor, the native bird will quickly rout the foreigner.

Speaking of birds that build in cavities reminds me of a curious trait the high-hole has developed in my vicinity, one which I have never noticed or heard of elsewhere. It drills into buildings and steeples and telegraph poles, and in some instances makes itself a serious nuisance. One season the large imitation Greek columns of an unoccupied old-fashioned summer residence near me were badly marred by them. The bird bored into one column, and finding the cavity—a foot or more across—not just what it was looking for, cut into another one, and still into another. Then he bored into the ice-house on the premises, and in the sawdust filling between the outer and inner sheathing found a place to his liking. One bird seemed like a monomaniac, and drilled holes up and down and right and left as if possessed of an evil spirit. It is quite probable that if a high-hole or other woodpecker should go crazy, it would take to just this sort of thing, drilling into seasoned timber till it used its strength up. The one I refer to would cut through a dry hemlock board in a very short time, making the slivers fly. The sound was like that of a carpenter's hammer. It may have been that he was an unmated bird, a bachelor whose suit had not prospered that season, and who was giving vent to his outraged instincts in drilling these mock nesting-places.