Collected Evidence: Collected Evidence: Use vocalisations to attract birds to safe areas Six studies from North America, the Galapagos and the Azores found that seabirds were more likely to nest in areas where vocalisations were played, or were successfully attracted to nest in new areas, following the playing of vocalisations. Four of these studies used several interventions at once. One study found that some calls were more effective than others. Two studies from the USA and the Galapagos found that birds did not colonise all new areas where vocalisations were played. It is possible that the result from the Galapagos was due to only having a single year’s data. One controlled study from Hawaii found that albatross were more likely to land in areas where vocalisations were played than in areas without vocalisation playback. A small controlled study from New Zealand found that terns were not more likely to land in areas where vocalisations were played.  Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F585https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F585Sat, 06 Oct 2012 21:54:59 +0100Collected Evidence: Collected Evidence: Use decoys to attract birds to safe areas Seven studies found that birds bred in areas where decoys (of birds or nests) were used to attract birds. Six of the studies used several interventions at once. Two studies from the USA found that least terns Sterna antillarum and herons were not attracted to new areas to breed when decoys were used. Five studies from North America and France and Spain found that more birds landed near decoys than in control areas. The two studies to compare decoy types found that three-dimensional models were better than two-dimensional ‘cut-outs’ and plastic models of birds were better than rag decoys.  Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F586https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F586Sat, 06 Oct 2012 22:25:17 +0100Collected Evidence: Collected Evidence: Alter habitat to encourage birds to leave an areaA single before-and-after study in the USA found that an entire Caspian tern Sterna caspia population moved following (amongst other interventions) the alteration of nesting habitat at the old colony site.  Collected Evidencehttps%3A%2F%2Fwww.conservationevidence.com%2Factions%2F587https%3A%2F%2Fwww.conservationevidence.com%2Factions%2F587Sat, 06 Oct 2012 22:42:09 +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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