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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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PRINTED FROM CALIFORNIA SCHOLARSHIP ONLINE (www.california.universitypressscholarship.com). (c) Copyright University of California Press, 2019. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in CALSO for personal use.date: 18 September 2019

Edges, Trails, and Reproductive Performance of Spotted Towhees in Urban Greenspaces

Edges, Trails, and Reproductive Performance of Spotted Towhees in Urban Greenspaces

Chapter:
(p.166) (p.167) Chapter Eleven Edges, Trails, and Reproductive Performance of Spotted Towhees in Urban Greenspaces
Source:
Urban Bird Ecology and Conservation
Author(s):

Sarah Bartos Smith

Jenny E. McKay

Jennifer K. Richardson

Michael T. Murphy

Publisher:
University of California Press
DOI:10.1525/california/9780520273092.003.0011

Understanding effects of urban fragmentation on avian reproductive success is a question of much concern. We investigated the influence of park size, recreational trails, and habitat edges on the reproductive performance of the spotted towhee in urban forest fragments. We found no evidence for improved reproductive performance in larger parks and instead found greater fledgling production in medium-sized parks. While the probability of whole-nest success was independent of distance from habitat edge, nests near edges fledged significantly more offspring, were less likely to suffer partial brood losses, and produced heavier nestlings than those in the park interior. This study emphasizes the importance of both predation and food abundance as factors that influence avian reproductive success in urban areas.

Keywords:   anthropogenic food, edge effects, fragment size, nest predation, recreational trails, spotted towhee, urbanization

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