Abstract
A method for examining foraging decisions by birds damaging grapes in vineyards was developed using a bird-feeder table, time-lapse video, and artificial foods. Behavioral responses of blackbirds (Turdus merula) and silvereyes (Zosterops lateralis) to the experimental situation and in a natural vineyard setting were compared. The two species behaved in a similar way in the artificial and natural situations, indicating that the experimental method used is a valid and useful tool to investigate bird decision-making mechanisms with natural grapes.
Acknowledgment: Funding for the Marlborough Survey was from New Zealand Winegrowers.
- Copyright 2004 by the American Society for Enology and Viticulture
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Vol 55 Issue 3
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