Data from: Food supplementing peregrine falcon (Falco peregrinus tundrius) nests increases reproductive success without changes in parental mean provisioning rate ...
Parents are expected to exhibit intermediate levels of investment in parental care that reflect the trade-off between current versus future reproduction. Providing parents with supplemental food may allow for increased care to the current brood (additive model), re-allocation of parental effort to o...
| Main Authors: | , , , |
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| Format: | Dataset |
| Language: | English |
| Published: |
Dryad
2024
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.5061/dryad.pnvx0k6wt https://datadryad.org/stash/dataset/doi:10.5061/dryad.pnvx0k6wt |
| Summary: | Parents are expected to exhibit intermediate levels of investment in parental care that reflect the trade-off between current versus future reproduction. Providing parents with supplemental food may allow for increased care to the current brood (additive model), re-allocation of parental effort to other behaviours such as self-maintenance (substitution model) or may provide parents with a buffer against provisioning shortfalls (insurance model). We investigated the impact of parental food supplementation on provisioning behaviour and breeding success in Arctic-breeding peregrine falcons (Falco peregrinus tundrius) over five successive breeding seasons (2013-2017). We found that supplemental feeding had no impact on mean provisioning rates, yet resulted in increased nestling survival probability, increased nestling body mass, and decreased variance in nestling body mass and provisioning rates. These results are consistent with parents adopting a hybrid of the additive and substitution models. We suggest that ... : For full methodological details, please refer to the full manuscript. In brief: Parents at 52 nest sites were provided with supplemental food (quail) every 5 days (weather permitting) across the 5 study years; 75 nests were included as controls and were visited at the same regularity but not food-supplemented. Nest cameras were placed at nests included in the study, and photos were processed after the field season to extract data used to calculate inter-visit intervals (IVIs). Nestlings were also weighed during regular nest visits and were banded during the final nest visit. Data was analysed using Bayesian mixed-effect models using the 'brms' package in the R statistical environment (version 4.2.0). ... |
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