Collected Evidence: Collected Evidence: Use repellents on baits for predator control A replicated, randomised and controlled experiment in the USA found that methyl anthanilate and aminoacetophenone did not reduce consumption of baits by American kestrels Falco sparverius. A replicated, randomised and controlled experiment in New Zealand found that treating baits with pulegone or Avex™ reduced pecking rates in North Island robins Petroica australis longipes. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F159https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F159Tue, 15 May 2012 13:51:05 +0100Collected Evidence: Collected Evidence: Use coloured baits to reduce accidental mortality during predator control Two replicated and controlled trials in the USA found that dyed baits were consumed at significantly lower rates than control baits. A replicated, randomised and controlled trial in Australia found no differences in consumption rates of dyed and control baits. Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F182https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F182Fri, 01 Jun 2012 16:40:17 +0100Collected Evidence: Collected Evidence: Use aversive conditioning to reduce nest predation by avian predators Five studies from the USA and Europe found reductions in consumption of eggs treated with various chemicals. A further ex situ study from the USA found that American kestrels Falco sparverius consumed fewer chicks when they were treated, but not to the point of losing body condition. Three studies from the USA found some evidence that treating eggs with some chemicals may have reduced predation of eggs after treatment stopped, or  of untreated eggs, although two of these were only short term experiments and the third found that the effect was lost after a year. Four studies from the Europe and the USA found no evidence for conditioning, or a reduction in predation of wild (untreated) eggs.  Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F418https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F418Thu, 16 Aug 2012 15:50:26 +0100Collected Evidence: Collected Evidence: Use aversive conditioning to reduce nest predation by mammalian predators One study from the USA and three  ex situ experiments found evidence for lower consumption of eggs treated with repellent chemicals. However, when untreated eggs were provided simultaneously with or after treated eggs, no studies found evidence for continued lower predation. I.e. aversive conditioning did not occur. In addition, a study from the USA found no effect of repellent chemicals on predation rates of genuine nests.  Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F419https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F419Fri, 17 Aug 2012 16:10:42 +0100
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What Works in Conservation

What Works in Conservation provides expert assessments of the effectiveness of actions, based on summarised evidence, in synopses. Subjects covered so far include amphibians, birds, mammals, forests, peatland and control of freshwater invasive species. More are in progress.

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