What question did this study set out to answer?

To determine whether cross-species variation in feather growth rate and feather quality is shaped by breeding latitude or moulting latitude across passerines.

March 9, 2022Proceedings of the Royal Society B Biological SciencesOpen Access

Feather growth and quality across passerines is explained by breeding rather than moulting latitude

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Authors

KHKryštof HorákMasaryk University LBLukáš BobekMasaryk University MAMarie AdámkováMasaryk University

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Implication

Comparative study reveals slower feather growth and higher stress marks in tropical passerines, indicating that breeding latitude dictates life-history investment.

Key Points

To determine whether cross-species variation in feather growth rate and feather quality is shaped by breeding latitude or moulting latitude across passerines.
Analyzed tail feather growth rates and stress-induced fault bar occurrence in 1,518 individuals across 167 species and 39 passerine families.
Sampled birds from Afrotropical and northern temperate zones, comparing tropical residents, temperate residents, and trans-Saharan latitudinal migrants.
Tropical breeding species exhibited significantly slower feather growth rates and three times higher fault bar occurrence than temperate breeding species.
Trans-Saharan migrants exhibited fast feather growth rates and low fault bar occurrence similar to temperate residents, despite moulting in tropical environments alongside tropical species.

Cite This Study

Horák et al. (2022) studied this question.

synapsesocial.com/papers/6a7dd3d833dcb27c99cb5ba9 https://doi.org/10.1098/rspb.2021.2404

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Implication

Comparative study reveals slower feather growth and higher stress marks in tropical passerines, indicating that breeding latitude dictates life-history investment.

Feather growth and quality across passerines is explained by breeding rather than moulting latitude

Discussion

Member takes

Implication

Key Points

Cite This Study

Feather growth and quality across passerines is explained by breeding rather than moulting latitude

Discussion

Member takes

Implication

Key Points

Cite This Study

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