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December 5, 2025Peer Community JournalOpen Access

Disentangling urbanisation, climate effects and their interaction on ornamental colourations

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Authors

LSLisa SandmeyerCentre National de la Recherche ScientifiqueAFAmélie FargevieilleCentre National de la Recherche ScientifiquePGPablo GiovanniniCentre National de la Recherche Scientifique

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Overview

Observational analysis found urbanisation affects chromatic traits in great tits, indicating impacts on natural and sexual selection.

Key Points

  • Urbanisation significantly dulls yellow breast colouration in great tits compared to forest counterparts, reducing chromaticity by 10-20%.
  • First-year birds and males experience the greatest reductions in colour richness, highlighting urban-related stressors on phenotype.
  • The study employed a decade-long individual-based approach, assessing the interaction between urbanisation, climate change, and their effects on bird colouration.
  • Findings underscore the need to consider urbanisation and climate together, as they may influence adaptability and biodiversity in urban environments.

Cite This Study

Sandmeyer et al. (2025) studied this question.

synapsesocial.com/papers/6940224e2d562116f28fc0edhttps://doi.org/10.24072/pcjournal.664
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Bird colours in urban mosaics: a study of two passerines2025 · 2 citations
  2. 2Replicated urban mosaics reveal trait- and species-specific shifts in carotenoid and structural plumage colouration of two passerines2026
  3. 3Unmasking black and yellow in a common garden: genetic and environmental drivers of urban colour divergence2026 · 1 citations
  4. 4Urbanization as an environmental filter for megacolorful birds2024
  5. 5An Analysis of Great Tit Egg Traits Across the City Mosaic: Urbanisation Does Not Affect Egg Size and Pigmentation Patterns2026