The woodland flocks usually consist of a number of species all of which seem to be on the most cordial terms, having, no doubt, a community of interest. As we quietly pursue our way in this wooded vale, we see no birds for some distance. Presently a fine, protesting "chick-a-dee-dee! chick-a-dee-dee!" breaks the silence. It is the warning call of the tomtit or chickadee, which we soon espy tilting about on his trapeze of twigs in the trees or bushes. But you may depend upon it he is not alone; he is only a part of the rim of a feathered colony dwelling near at hand, and consisting, very likely, of tufted titmice, white-breasted nuthatches, juncos, tree sparrows, blue jays, one or two downy woodpeckers, a pair of cardinals, a flicker or two, and a cackling red-breasted woodpecker. There may be even a song sparrow in the company and a couple of brown creepers, and possibly a flock of purple finches, chirping cheerily in the tops of the trees. While, in the spring and summer, birds are to be found in nearly every part of the woods, never many at one place, the opposite condition prevails in the winter. Sometimes you may walk almost a half mile without seeing or hearing a single bird; then you suddenly come upon a good-sized company of them, somewhat scattered, it is true, but within easy hailing distance. Nor do they always remain in the same localities, but move about, now here, now there, like nomads looking for the best foraging places. For instance, on the first of January, after leaving the city, I saw not a bird until I reached a pleasant sylvan hollow at least a half mile away. Here a merry crowd greeted the pedestrian. It was composed of all the birds I have just named, with flocks of bluebirds and goldfinches thrown in for good measure. On the fourteenth of January a company--either the same or another--was found in a small copsy hollow only a quarter of a mile from the city, while the spot previously occupied was deserted. It is pleasant to think of these feathered troopers roaming about the country in search of Nature's choicest storehouses. The code that obtains in these movable birdvilles is this, as near as I am able to analyze it: Each one for himself, and yet all for one another.