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. 2021 Oct 13;288(1960):20211258. doi: 10.1098/rspb.2021.1258

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© 2021 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. — Weanling mass as a function of maternal age at low density (light blue; pup births < 1200) and high density (dark blue, pup births > 1900), with spline regression curves and shaded confidence intervals. (Online version in colour.)