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September 10, 2025Journal of Avian BiologyOpen Access

Passerine stopover physiology: weather variability does not alter corticosterone dynamics after sea crossing

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Authors

ECErica CalabrettaVCVirginie CanoineMCMassimiliano Cardinale

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Overview

Observational analysis reveals weather variability does not impact corticosterone levels in passerines, suggesting resilience.

Key Points

  • Corticosterone levels remained stable regardless of weather conditions faced during migration.
  • Birds arriving with sufficient energy reserves showed similar stress hormone responses to various weather scenarios.
  • Weather effects on fuel stores were noted, yet did not alter baseline corticosterone concentrations.
  • Corticosterone dynamics suggest that nocturnal passerines can cope with weather variability if energy reserves are maintained.

Cite This Study

Calabretta et al. (2025) studied this question.

synapsesocial.com/papers/68c1ad5c54b1d3bfb60e56b3https://doi.org/10.1002/jav.03474
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