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Providing evidence to improve practice

Individual study: A reduction in predation pressure increases the breeding success and population density of grey partridges Perdix perdix, Salisbury Plain, Wiltshire, England

Published source details

Tapper S.C., Potts G.R. & Brockless M.H. (1996) The effect of an experimental reduction in predation pressure on the breeding success and population density of grey partridges Perdix perdix. Journal of Applied Ecology, 33, 965-978


This study is summarised as evidence for the intervention(s) shown on the right. The icon shows which synopsis it is relevant to.

Control predatory mammals and birds (foxes, crows, stoats and weasels) Farmland Conservation

A replicated, controlled study at two farmland and woodland sites in southern England between 1985 and 1990 (Tapper et al. 1996) found that grey partridge Perdix perdix breeding success and brood sizes were significantly higher when predators were controlled, compared to years without removal. This led to August partridge numbers being 75% higher and breeding numbers the next year being 36% higher. Over three years this led to breeding densities being 2.6 times greater when predators were removed. Predators removed through trapping and shooting were predominantly red foxes Vulpes vulpes, carrion crows Corvus corone and black-billed magpies Pica pica.

 

Control predators not on islands for gamebirds Bird Conservation

A replicated, controlled study at two farmland and woodland sites in southern England between 1985 and 1990 (Tapper et al. 1996) found that grey partridge Perdix perdix breeding success and brood sizes were significantly higher when predators were controlled, compared to years without removal. This led to August partridge numbers being 75% higher and breeding numbers the next year being 36% higher. Over three years this led to breeding densities that were 2.6 times greater when predators were removed. Predators removed through trapping and shooting were predominantly red foxes Vulpes vulpes, carrion crows Corvus corone and black-billed magpies Pica pica.