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1 September 2007 Responses of Waterbirds to Helicopter Disturbance and Fish Poisoning by Rotenone at Paardevlei, South Africa
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Abstract

Helicopter spraying of rotenone fish poison over Paardevlei, a lake near Cape Town, provided an opportunity to assess both the effect of helicopter disturbance on waterbirds and the immediate response of birds to fish poisoning. Birds were less disturbed by protracted helicopter activity than by a single fish eagle over-flight. Rotenone provided a food bonanza for pelicans and cormorants with no evidence of adverse effects on any birds.

Tony J. Williams "Responses of Waterbirds to Helicopter Disturbance and Fish Poisoning by Rotenone at Paardevlei, South Africa," Waterbirds 30(3), 429-432, (1 September 2007). https://doi.org/10.1675/1524-4695(2007)030[0429:ROWTHD]2.0.CO;2
Received: 29 September 2006; Accepted: 1 December 2006; Published: 1 September 2007
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