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. 2017 Jun 7;284(1856):20170143. doi: 10.1098/rspb.2017.0143

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© 2017 The Authors.

Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.

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Figure 2. — Behavioural responses to playback of motorboat noise compared with playback of ambient sound: (a) brood-guarding males made more defensive acts per min; (b) males spent less time feeding; (c) glancing behaviour was rarer. Boxes represent interquartile ranges and lines within boxes represent the median across 19 Ambient and 17 Boat nests. Whiskers represent ±1.5 × interquartile range. Open circles denote any data points that fall outside of the range of the whiskers. N determined by number of nests, data within nests averaged over duration of exposure, two Boat nests suffered complete mortality prior to first observation. (Online version in colour.)