XIII. FRIENDSHIP IN FEATHERS. Emerson somewhere speaks of a friendship "on one side, without due correspondence on the other," and I often thought of it while watching the curious relation between two birds in my house last winter; for the more one studies our feathered neighbors, the better he comes to realize that the difference between their intelligence and that of man himself is "only of less and more." This friendship, then, was all on one side. It was not a case of "love at sight"; on the contrary, it was first war, and the birds had been room-mates for months before any unusual interest was shown; neither was it simple admiration of beauty, for the recipient of the tenderness was at his worst at the moment; nor, again, could it be the necessity of loving somebody, for the devotee had lived in the house ten years, and had seen forty birds of almost as many kinds come and go, without exhibiting any partiality. The parties to this curious affair were, first, the beloved, a male scarlet tanager, whose summer coat was disfigured with patches of the winter dress he was trying to put on; and secondly, the lover, a male English goldfinch, scarcely half his size. The tanager, as perhaps every one knows, is one of our most brilliant birds, bright scarlet with black wings and tail. He is as shy as he is gay, living usually in the woods, and not taking at all kindly to the enforced companionship of mankind. I had long been anxious to make the acquaintance of this retiring bird, partly because I desire to know personally all American birds, and partly because I wanted to watch his change of plumage; for the scarlet uniform is only the marriage dress, and put off at the end of the season. Hence whenever I saw a tanager in a New York bird store I brought it home, though dealers always warned me that it would not live in confinement. My first attempts were disastrous, certainly. The birds refused to become reconciled, even with all the privileges I gave them, and one after another died, I believe for no other reason than their longing for freedom. Let me say here that feeling thus, they would have received their liberty, much as I wished to study them, only their plumage was not in condition to fly, and they would go out to certain death. My hope was to make them contented through the winter, while they put on a new suit of feathers, and open the doors for them in summer.