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. 2018 Aug 17;8:12303. doi: 10.1038/s41598-018-29962-x

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© The Author(s) 2018

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Location graphs of four focal hens over 11 consecutive days. Each panel represents a single hen (1, 3, 9, 37). Within each graph, each line (top to bottom) represents location data for a single day where lights were on between approximately 0200 and 1700. The Y-axis represents the zone in which the animal was present and the X-axis represents the time of day.