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Providing evidence to improve practice

Individual study: Effect of nest exclosures on predation of killdeer Charadrius vociferus nests at Long Point, Lake Erie, Ontario, Canada

Published source details

Nol E. & Brooks R.J. (1982) Effects of predator exclosures on nesting success of killdeer. Journal of Field Ornithology, 53, 263-268

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

Physically protect nests with individual exclosures/barriers or provide shelters for chicks of waders Bird Conservation

A small randomised, replicated and controlled trial in 1978 on a beach on Lake Erie, Canada (Nol & Brooks 1982) found that predation rates of killdeer Charadrius vociferous nests were not significantly different between 12 nests protected with a novel predator exclosure (‘H’ shaped frame with the nest in the centre and eight 7 x 12 cm openings, covered in 1.4 cm mesh hardware cloth) and 17 control nests (75% of protected nests and 71% of unprotected nests predated). However, no protected nests were lost to avian predators (gulls Larus spp. or American crow Corvus brachyrhynchos). Instead they were predated by raccoons Procyon lotor or mustelids which could enter exclosures.