Cited by 146Avian ecology and behaviorAnimal Behavior and ReproductionSpecies Distribution and Climate Change

Is supplementary feeding in gardens a driver of evolutionary change in a migratory bird species?

Plummer, Kate E., Siriwardena, Gavin M., Conway, Greg J., Risely, Kate, Toms, Mike P.·2015·Global Change Biology

Abstract

Human activities are causing rapid environmental change at a global scale. Urbanization is responsible for some of the most extreme human‐altered habitats and is a known driver of evolutionary change, but evidence and understanding of these processes is limited. Here, we investigate the potential underlying mechanisms contributing to the contemporary evolution of migration behaviour in the Eurasian blackcap (Sylvia atricapilla). Blackcaps from central Europe have been wintering in urban areas of Britain with increasing frequency over the past 60 years, rather than migrating south to the Mediterranean. It has been hypothesized that the popularization of providing supplementary foods for wild birds within Britain may have influenced this marked migratory change, but quantifying the selective forces shaping evolutionary changes remains challenging. Using a long‐term national scale data set, we examine both the spatial distribution and interannual variation in blackcap wintering behaviour in Britain in relation to supplementary food availability and local climate. Over a 12‐year period, we show that blackcaps are becoming increasingly associated with the provision of supplementary foods in British gardens, and that the reliability of bird food supplies is influencing their winter distribution at a national scale. In addition, local climatic temperatures and broader scale weather variation are also important determinants of blackcap wintering patterns once they arrive in Britain. Based on our findings, we conclude that a synergistic effect of increased availability of feeding resources, in the form of garden bird food, coupled with climatic amelioration, has enabled a successful new wintering population to become established in Britain. As global biodiversity is threatened by human‐induced environmental change, this study presents new and timely evidence of the role human activities can play in shaping evolutionary trajectories.

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Crossref · 10.1111/gcb.13070

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Authors
Plummer, K. E., Siriwardena, G. M., Conway, G. J., Risely, K., & Toms, M. P.
Affiliations
British Trust for Ornithology (GB)
Corresponding author
Plummer, Kate E.
Venue
Global Change Biology
Publisher
Wiley
Published
2015-09-24
Volume
21
Issue
12
Pages
4353-4363
ISSN
  • 1354-1013 (ISSN-L)
  • 1365-2486
OpenAlex
W2109274948
Cited by
146
References
50
Citations by year
2026: 7 · 2025: 10 · 2024: 7 · 2023: 15 · 2022: 10 · 2021: 20 · 2020: 13 · 2019: 11 · 2018: 29 · 2017: 13 · 2016: 10 · 2015: 1
FWCI
16.02
Type
journal article
Language
en
Open access
closed
Locations
  • Global Change Biology (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • BTO Young Scientist Appeal
  • Garden BirdWatch participants
Topics
  • Physical Sciences › Environmental Science › Ecology › Avian ecology and behavior
  • Life Sciences › Agricultural and Biological Sciences › Ecology, Evolution, Behavior and Systematics › Animal Behavior and Reproduction
  • Physical Sciences › Environmental Science › Ecological Modeling › Species Distribution and Climate Change
Keywords
Eurasian blackcap, Sylvia atricapilla, migratory behavior, rapid evolution, urbanization, wintering range shift, climate amelioration, local climate, winter distribution, anthropogenic environmental change, British gardens
MeSH terms
Animals, Diet, Feeding Methods, Food Preferences, United Kingdom, Population Dynamics, Seasons, Songbirds, Animal Migration, Animal Distribution

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