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300 Kwubba-wubba. Ow (prolonged, a peculiar musical piping note). Polyglot (or something remarkably like it). Quar-r-r-r. Quor-r-r-r-r-r (very prolonged, and deep, as in remonstrance). Quow-yow, or yow-quow. Shook, shook, shook (soft and quickly repeated. Have heard it uttered by rooks when flying home belated, after the great majority had settled in the roosting-trees). Tchar. Tchar-r-r (with a little roll in it). Tchu or tew. Tchoo-oo (very deep and guttural). The peculiar "burring" note (uttered, but by no means always, when the birds swoop down on to trees, especially the roosting-trees. It is not heard very frequently). A peculiar sound like a kind of bleat, with a very complaining tone in it. A short, sharp, single note, much higher than the ordinary caw. A kind of grating scream, much higher than the usual tone. A hoarse "mew," or "miaul" almost, as though a rook were trying to imitate a cat, or a cat a rook. The liquid castanet-note in the throat, suggesting the "burr," but not quite it. Various other curious little sounds in the throat, some of them clicks.