Local use of landfills by a yellow-legged gull population suggests distance-dependent resource exploitation / Egunez, A., Zorrozua, N., Aldalur, A., Herrero, A., Arizaga, J.
Contributor(s): Egunez, Alexandra
| Zorrozua, Nere | Aldalur Zulaika, Asier | Herrero Gorrotxategi, Alfredo | Arizaga, Juan | Aranzadi Zientzia Elkartea | .
Material type: 
Computer fileCitation: Egunez, A., Zorrozua, N., Aldalur, A., Herrero, A., Arizaga, J., 2017. Local use of landfills by a yellow-legged gull population suggests distance-dependent resource exploitation. J. Avian Biol. 49(2). https://doi.org/10.1111/jav.01455. Publisher: [S.l.]: Wiley, 2018Content type: Texto (visual) Media type: electrónico Genre/Form: Artículo científicoOnline resources: Click here to access online Summary: Understanding the use of feeding sources at the local scale is crucial in comprehending the factors driving population dynamics, dispersal and territory use. Many gull (Larus spp.) populations have increased sharply, which is partly promoted by their use of landfills as a food resource. Although at the large scale it is known that birds from mainland colonies feed more on landfills than those from offshore colonies, at the local scale, this distance‐dependent exploitation has been little studied. Here, then, we study whether the extent of gulls’ use of landfill is distance‐dependent through the study of 3 different gull colonies and five separate landfill sites within a relatively small geographical area. After controlling for bird numbers by both age cohort and colony, we observed that the number of gulls found at each landfill was colony dependent and that it decreased non‐linearly with increased distance to place of birth.
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Volume49, Issue2 February 2018
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Understanding the use of feeding sources at the local scale is crucial in comprehending the factors driving population dynamics, dispersal and territory use. Many gull (Larus spp.) populations have increased sharply, which is partly promoted by their use of landfills as a food resource. Although at the large scale it is known that birds from mainland colonies feed more on landfills than those from offshore colonies, at the local scale, this distance‐dependent exploitation has been little studied. Here, then, we study whether the extent of gulls’ use of landfill is distance‐dependent through the study of 3 different gull colonies and five separate landfill sites within a relatively small geographical area. After controlling for bird numbers by both age cohort and colony, we observed that the number of gulls found at each landfill was colony dependent and that it decreased non‐linearly with increased distance to place of birth.
Egunez, A., Zorrozua, N., Aldalur, A., Herrero, A., Arizaga, J., 2017. Local use of landfills by a yellow-legged gull population suggests distance-dependent resource exploitation. J. Avian Biol. 49(2). https://doi.org/10.1111/jav.01455.
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