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Comment Le Chant Du Troglodyte (Troglodytes Troglodytes) Émerge Du Bruit

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The information theory tells us which strategies can be used to compensate for alterations introduced by the channel. By encoding, the wren constructs his song in such a way that it can take advantage of most of these strategies. By decoding, it does not use all the strategies which encoding has made available. The choise and number of those which are used is a function of difficulties which the bird will encounter in recognizing the song of its own species. For instance, the duration or even the existence of silences between the notes are not taken into account. The bird uses them only to remove a difficulty about elements recognition. In this manner it is possible to explain the effectiveness and reliability of song as a means of communication.


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Affiliations: 1: Laboratoire d'Éthologie Experimentale (UA 667), Station de Terrain de St. Lucien, 28210 Nogent-le-Roi, France


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