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. 2015 Sep 28;6:1416. doi: 10.3389/fpsyg.2015.01416

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Copyright © 2015 Henry, Craig, Lemasson and Hausberger.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Song behavior according to immediate context. (A) Males increased their interval duration when another bird was singing (Wilcoxon, N = 7, T = 0, p < 0.02). (B) Birds did not change their interval duration when another bird was present but silent and increased their interval duration when the other bird was singing. (C) Most of the birds interrupted the vocal interaction in case of overlap (^*:X² = 2256, df = 1, p ≤ 0.05).