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. 2015 Aug 24;12(Suppl 1):S7. doi: 10.1186/1742-9994-12-S1-S7

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Copyright © 2015 Hau et al.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Relationships between baseline corticosterone concentrations and fledgling numbers in wild great tits. Baseline corticosterone concentrations (ng/ml) and yearly fledgling number (a) before the breeding season (March) and (b) during the peak parental provisioning phase in May (yearly fledgling number was corrected for feeding rate since fledgling number and feeding rate are positively correlated). Solid symbols and lines: females (March: n=26, May: n=96); open symbols and dashed lines: males (March: n=22, May: n=93), data from two study years are combined. Regression lines derived from linear mixed models, p<0.02 for all relationships [53].