It seems clear that the song of birds, like their calls--the two shade indefinitely into each other--expresses a sympathetic emotional consciousness of the actions going on about them, particularly of the life of their kind. In general these utterances are directed toward their kindred of their own species. In many cases, however, as among the imitative birds, the sounds which they utter indicate a curiously keen interest in the actions of their masters or other human affairs. The mocking-birds and some other species will, with great assiduity, endeavor to copy any sound which they happen to hear. I well remember watching a mocking-bird which was listening with rapt attention to the noise produced by a man sharpening a saw with a file. The poor bird would hearken with great attention until he thought he had caught the note, and then endeavor to reproduce it. As may be imagined, the measure of his success was small. He was fully conscious of his failure, and would beat himself about the cage in evident chagrin, returning again and again to try the hopeless task. Wherever the vocal organs of caged birds permit them to imitate human speech they are apt to devote a large part of their labor to this task, paying little attention to other less meaningful sounds. It appears to me that they perceive in a way the sympathetic character of language and therefore take a peculiar pleasure in copying it. It is hardly to be believed that they ever get a sense of the connotative value of words, but it is not to be doubted that they sometimes attain to a certain appreciation of the denotation of simpler phrases. In this task they do not exhibit as much sagacity as the dog, a creature which learns to understand the purport of rather complicated sentences. Nevertheless, their capacity for imitating speech is a fascinating peculiarity, one which has greatly endeared them to bird fanciers. Those who have observed the talking birds have doubtless noted the fact that their capacity for remembering and uttering words varies greatly. I am inclined to think that in the same species some individuals can do such tasks several times as easily as others. If these speaking forms could be brought to breed in captivity, and something like the selective care were given to their development that has been devoted to the varieties of pigeons, we might well expect to attain very remarkable results. If anywhere in the animal world there is a chance to open communication by means of speech with the lower creatures, it should be here. [Illustration: The Falconer's Favorite--Peregrine Falcon]