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I have purposely left to the last the one point about parrots which most often attracts the attention of the young, the gay, the giddy, and the thoughtless: I mean their power of mimicry in human language. And I believe I am justified in passing it over lightly. For in fact this power is but a very incidental result of the general intelligence of parrots, combined with the other peculiarities of their social life and forestine character. Dominant woodland animals, indeed, like monkeys, parrots, toucans, and hornbills, at least if vegetarian in their habits, are almost always gregarious, noisy, mischievous, and imitative. And the imitation results directly from the unusual intelligence; for, after all, what is the power of learning itself–at least, in all save its very highest phases–but the faculty of accurately imitating another? Monkeys for the most part imitate action only, because they haven’t very varied or flexible voices. Parrots and many other birds, on the contrary–like the starling and still more markedly the American mocking-bird–being endowed with considerable flexibility of voice, imitate either songs or spoken words with great distinctness. In the parrot the power of attention is also very considerable, for the bird will often try over with itself repeatedly the lesson it has set itself to learn. But people too generally forget that at best the parrot knows only the general application of a sentence, not the separate meanings of its component words. It knows, for example, that ‘Polly wants a lump of sugar’ is a phrase often followed by a present of food. But to believe it can understand an abstract expression, like the famous ‘By Jove! what a beastly lot of parrots!’ is to confound learning by rote with genuine comprehension. A careful review of all the evidence makes almost every scientific observer conclude that at most a parrot knows a word of command as a horse knows ‘Whoa!’ or a dog knows the order to hunt for rats in the wainscot.