Social attractants, a conservation tool for black-fronted terns
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Published source details
Hamblin C.H., Paterson A., Ross J.G. & Maloney R.F. (2019) Social attractants, a conservation tool for black-fronted terns. Wildlife Society Bulletin, 43, 468-475.
Published source details Hamblin C.H., Paterson A., Ross J.G. & Maloney R.F. (2019) Social attractants, a conservation tool for black-fronted terns. Wildlife Society Bulletin, 43, 468-475.
Summary
Use vocalisations to attract birds to safe areas
A replicated, randomized, paired, controlled study in 2016 along nine rivers in Canterbury, New Zealand (Hamblin et al. 2019) reported that adding decoys and playing vocalizations increased the number of times black-fronted terns Childonias albostriatus interacted with plots, but had no significant effect on nest establishment. Terns interacted more often with vocalization+decoy plots (2.0 interactions/h) than with empty plots (0.2 interactions/h). Interactions included circling, hovering over or landing within plots. The average distance to the nearest tern nest did not significantly differ between treatments (vocalization+
decoy plots: 1,888 m; empty plots: 1,841 m). In the 2016 breeding season, ten pairs of 25-m2 plots were established along nine rivers. All plots were in sites with suitable physical habitat for tern nesting, but which had not been recently used. In one random plot/pair, tern decoys were added (10 decoys/plot, alone and in pairs) and tern calls were played intermittently throughout the day. The study does not distinguish between the effects of these interventions. Plots were observed throughout the breeding season (each plot observed at least once every two weeks, in a 1-h-long daytime observation session).
Use decoys to attract birds to safe areas
A replicated, randomized, paired, controlled study in 2016 along nine rivers in Canterbury, New Zealand (Hamblin et al. 2019) reported that adding decoys and playing vocalizations increased the number of times black-fronted terns Childonias albostriatus interacted with plots, but had no significant effect on nest establishment. Terns interacted more often with vocalization+decoy plots (2.0 interactions/h) than with empty plots (0.2 interactions/h). Interactions included circling, hovering over or landing within plots. The average distance to the nearest tern nest did not significantly differ between treatments (vocalization+
decoy plots: 1,888 m; empty plots: 1,841 m). In the 2016 breeding season, ten pairs of 25-m2 plots were established along nine rivers. All plots were in sites with suitable physical habitat for tern nesting, but which had not been recently used. In one random plot/pair, tern decoys were added (10 decoys/plot, alone and in pairs) and tern calls were played intermittently throughout the day. The study does not distinguish between the effects of these interventions. Plots were observed throughout the breeding season (each plot observed at least once every two weeks, in a 1-h-long daytime observation session).
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