Could it be that he was guilty--when he met other robins--of boasting of his conquest of me and of my utter subjugation? I cannot believe it possible. Also I never saw other robins accost him or linger in their passage through the rose-garden to exchange civilities. And yet a very strange thing occurred on one occasion. I was sitting at my table expecting him and heard a familiar chirp. When I looked up he was atilt upon the branch of an apple tree near by. I greeted him with little whistles and twitters thinking of course that he would fly down to me for our usual conversation. But though he chirped a reply and put his head on one side engagingly he did not move from his bough. "What is the matter with you?" I said. "Come down--come down, little brother!" But he did not come. He only sidled and twittered and stayed where he was. This was so extraordinary that I got up and went to him. As I looked a curious doubt came upon me. He looked like Tweetie--(which had become his baptismal name) he tilted his head and flirted and twittered after the manner of Tweetie--but--could it be that he was NOT what he pretended to be? Could he be a stranger bird? That seemed out of the question as no stranger bird would have comported himself with such familiarity. No stranger surely would have come so near and addressed me with such intimate twitterings and well-known airs and graces. I was mystified beyond measure. I exerted all my powers to lure him from his branch but descend from it he would not. He listened and smiled and flirted his tail but he stayed where he was. "Listen," I said at last. "I don't believe in you. There is a mystery here. You pretend you know me and yet you act as if you were afraid of me--just like a common bird who is made of nothing but feathers. I don't believe you are Tweetie at all. You are an Impostor!"