The Speech of Monkeys

The parrot is perhaps possessed of the greatest vocal power of any other bird. He imitates almost the entire range of sounds that are uttered by all other birds combined, and can also imitate the sounds of human speech from the highest to the lowest pitch of the human voice. In addition to all this, he imitates many noises, such as the sounds of sawing wood, the slam of a door, and the whistling of the wind. The vocal range of the parrot is perhaps the most marvellous of all the vocal products of the animal kingdom. One strange thing, however, that I observe among them is, that the range of sounds that they use among themselves is very small. I have made some records of parrots, macaws, cockatoos, &c., and I find their natural vocal sounds usually wanting in quality: most of their sounds are hoarse and guttural. Among the gallinaceous birds there does not appear to be much music. There is a great sameness of sounds in the different species, and they seem to be confined to the economic use of speech. In my early life I devoted much time to gunning, and I observed then, and called attention to the fact, that when a covey of birds became scattered I could tell at what point they would huddle. I could tell this by the call of one bird and the reply of the others. The call-bird, which was always the leader of the covey, would sound his call from a certain point near which the other birds would usually assemble, and during this time they would answer him from various other points. The sound used by the call-bird is unlike that used by the rest of the flock, but the sounds with which they reply to him are all alike, and by observing this I could always find the covey again by allowing them time to come together, especially if it was late in the afternoon.