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Spaced out Nests and Predators: An Experiment to Test the Effects of Habitat Structure
D. E. Chamberlain, B. J. Hatchwell and C. M. Perrins
Journal of Avian Biology
Vol. 26, No. 4 (Dec., 1995), pp. 346-349
Stable URL: http://www.jstor.org/stable/3677052
Page Count: 4
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The effect of nesting density on predation rate was studied in relation to habitat using artificial Blackbird nests placed at high, medium and low densities in three habitat types: woodland, woodland edge and farm hedgerow. The results showed that predation was lower in woodland than in woodland edge, which in turn had a lower predation rate than farmland. There was evidence of increasing predation rate at higher nesting densities in both woodland edge and farmland. Therefore there appears to be a potential cost to nesting at high densities in farm hedgerows and to a lesser extent woodland edge which is likely to be facilitated by enhanced 'edge effects' in those habitats.
Journal of Avian Biology © 1995 Nordic Society Oikos