The sounds from which the Chicadee has derived his name appear to be his call-notes, like the crowing of a Cock or the gobbling of a Turkey, and are probably designed by Nature to enable the birds, while scattered singly over the forest, to signalize their presence to others of the same species. Hence it may be observed, that, when the call is rapidly repeated, a multitude of his kindred will immediately assemble around the one that gave the alarm. When no alarm is intended to be given, the bird utters these notes but seldom, and only as he passes from one tree to another. He is probably accustomed to hearing a response, and, if one is not soon heard, he will repeat his call until it is answered; for as these birds do not forage the woods in flocks, this continual hailing is carried on between them to satisfy their desire for each other's company. A similar conversation passes between the individuals of a flock of Chickens, when scattered over a farmyard; one, on finding itself alone, will chirp until it hears a response, when it seems immediately satisfied. The call-notes of the Chicadee are very lively, with a mixture of querulousness in their tone, that renders them the more pleasing. The Chicadee is the smallest of the birds that remain with us during the winter. He is a permanent resident, and everybody knows him. He is a lively chatterer and an agreeable companion; and as he never tarries long in one place, he does not tire one with his garrulity. He is our attendant in all our pleasant winter-walks, in the orchard or the wood, in the garden or by the rustic wayside. We have seen him, on still winter-days, flitting from tree to tree, with the liveliest motions and in the most engaging attitudes, examining every twig and branch, and winding over and under and in and out among them, and, after a few lively notes, hopping to another tree to pass through the same manoeuvres. Even those who are confined to the house are not excluded from a sight of these birds; one cannot open a window, on a bright winter's morning, without a greeting from one of them on the nearest tree. Beside the note from which the Chicadee derives his name, he sometimes utters two very plaintive notes, which are separated by a regular musical interval, making a fourth on the descending scale. They slightly resemble those of the Pewee, and are often supposed to come from some other bird, so different are they from the common note of the Chicadee. I have not been able to ascertain the circumstances under which the bird repeats this plaintive strain, but it is uttered both in summer and winter. Indeed, there is such a variety in the notes uttered at different times by this bird, that, if they were repeated in uninterrupted succession, they would form one of the most agreeable of woodland melodies.