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Am. J. Enol. Vitic. 55:3:288-291 (2004)
Copyright © 2004 by the American Society for Enology and Viticulture.
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Experimental Method to Investigate and Monitor Bird Behavior and Damage in Vineyards

Valerie P. Saxton 1, Glen L. Creasy 1, Adrian M. Paterson 1, and Michael C.T. Trought 2

1 Soil, Plant and Ecological Sciences Division, P.O. Box 84, Lincoln University, Canterbury 8150, New Zealand
2 Marlborough Wine Research Centre, P.O. Box 845, Blenheim, New Zealand

Email: saxtonv{at}lincoln.ac.nz

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.

Note:
Acknowledgment: Funding for the Marlborough Survey was from New Zealand Winegrowers.

Key words: artificial grapes, bird damage






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Copyright © 2004 by the American Society for Enology and Viticulture.