What I have called talk was a very low twitter in a conversational tone, on one note, not at all in a singing tone, like the usual warble or call. I have also heard it from wild bluebirds, when I could get near enough. From the first, as said above, the male did most of the talking, and the habit grew upon him, till he became a regular babbler, standing on the top perch, and keeping it up persistently all day long. I think it arose from the fact that the greater number of birds in the room were thrushes, who sang very softly, without opening the mouth. With this gentle ripple of song the bluebird's voice harmonized perfectly, and he almost entirely discontinued his lovely song, while indulging himself in talk by the hour. Strange to say, I soon noticed that his mate did not approve of it, and would not stand on the perch beside him while he continued it. At first she turned sharply towards him, and he showed that he understood her wishes by ceasing for a while; but as the habit grew, and he was not so easily silenced, she more and more deserted his side, and after two or three weeks I heard occasionally a gentle remonstrance from her. I do not believe a really harsh tone can come from a bluebird throat. One day they were taking their usual midday nap on the same perch, when a thrush across the window began his low song. That started the bluebird, and he added his chatter, which awakened his mate. She endured it for about five seconds, and then she suddenly stretched the wing nearest him so far that he was obliged to move away, when she instantly hopped down herself.