Publikation: Reduced parental brood visit rate in wild zebra finches Taeniopygia castanotis is correlated with high maximum daily ambient temperature
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As a result of a warming global climate, understanding how organisms adjust their behaviour to environmental thermal conditions has become an increasingly important question in animal biology. Temperature‐driven adjustments in parental care are potentially important given the repercussions on offspring size, quality and survival. In 2015 and 2016 we monitored parental care for 83 zebra finch Taeniopygia castanotis breeding attempts in the wild with known brood sizes. We recorded the frequency of parental visits to the nest together with mean maximum ambient temperature experienced between day 7 and 14 of the nestling period. We found that for each increase of 1°C in the daytime temperature there was a 0.91% reduction in the hourly rate of parental visits, whilst also accounting for other variables such as nestling age, time of season, and wind speed. Our data suggest that nestlings may receive less food under thermally challenging conditions, which is consistent with recent studies that demonstrate offspring are smaller when reared during periods of high temperature. Understanding the behavioural drivers that may contribute to the production of smaller offspring in extreme heat conditions could prove useful to forecast long‐term consequences for fitness triggered by climate change.
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WHEELER, Madeleine, Riccardo TON, Hanja B. BRANDL, Wiebke SCHUETT, Simon C. GRIFFITH, 2025. Reduced parental brood visit rate in wild zebra finches Taeniopygia castanotis is correlated with high maximum daily ambient temperature. In: Journal of Avian Biology. Wiley. 2025(1), e03152. ISSN 0908-8857. eISSN 1600-048X. Verfügbar unter: doi: 10.1111/jav.03152BibTex
@article{Wheeler2025Reduc-67721, title={Reduced parental brood visit rate in wild zebra finches <i>Taeniopygia castanotis</i> is correlated with high maximum daily ambient temperature}, year={2025}, doi={10.1111/jav.03152}, number={1}, issn={0908-8857}, journal={Journal of Avian Biology}, author={Wheeler, Madeleine and Ton, Riccardo and Brandl, Hanja B. and Schuett, Wiebke and Griffith, Simon C.}, note={Article Number: e03152} }
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