Acoustic methods to deter grey herons (Ardea cinerea) from fishfarms
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Published source details
Behlert R. (1977) Phonoakustische Methode zur Vergrämung von Graureihern (Ardea cinerea) in Fischzuchtanlagen. Zeitschrift für Jagdwissenschaft, 23, 144-152.
Published source details Behlert R. (1977) Phonoakustische Methode zur Vergrämung von Graureihern (Ardea cinerea) in Fischzuchtanlagen. Zeitschrift für Jagdwissenschaft, 23, 144-152.
Actions
This study is summarised as evidence for the following.
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Scare birds from fish farms Action Link |
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Scare birds from fish farms
A trial at a fish pond in western Germany in 1976 (Behlert 1977) found that broadcasting the flight call of a grey heron Ardea cinerea during daylight caused herons standing near the pond to take off and deterred flying herons from landing. However, at dawn trials, the majority (ten of 12) of herons were not deterred from landing. Preliminary trials had revealed that distress calls were more effective at scaring herons than heron alarm calls, combined heron and other bird alarm calls or a white-tailed sea eagle Haliaeetus albicilla call.
