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Urban Bird Ecology and Conservation$
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Christopher A. Lepczyk and Paige S. Warren

Print publication date: 2012

Print ISBN-13: 9780520273092

Published to California Scholarship Online: May 2013

DOI: 10.1525/california/9780520273092.001.0001

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Does Nest Predation Shape Urban Bird Communities?

Does Nest Predation Shape Urban Bird Communities?

(p.49) Chapter Four Does Nest Predation Shape Urban Bird Communities?
Urban Bird Ecology and Conservation

Christine M. Stracey

Scott K. Robinson

University of California Press

Urban bird communities differ fundamentally from those in nonurban habitats. One hypothesis for this altered structure is that altered nest-predator communities in urban habitats affect which species thrive. We counted birds and measured nest-predation rates in a variety of communities in Florida (USA). We predicted that (1) avian nest predators would be more abundant in urban habitats, (2) species with life-history traits associated with defenses against predation would be more abundant in urban habitats relative to nonurban habitats, and (3) urban adapters would experience lower nest-predation rates in urban habitats relative to nonurban habitats. We found support for all three predictions. The results have parallels in small, fragmented forests, which are also dominated by larger species.

Keywords:   body size, community composition, nest predation, urbanization

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