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Bird damage
Tom Zabadal , MSU Horticulture
Home > Scouting guide> bird damage
Birds damage grapes either by totally removing berries or by pecking the berry surface. The resulting angular punctures often develop into depressions in the berry surface. Look for a pattern of injury on visible clusters, especially next to structures where birds may perch.

At left, bird damage at harvest on the Leon Millot variety with berries completely missing from some pedicels. At right, the variety Aurore shows bird-pecked areas deteriorating with fruit rot.
Bird damage Bird damage
Photos: T. Zabadal

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Funding for this web site provided by Project GREEEN, American Farmland Trust, EPA Region 5's Strategic Agricultural Initiative program, The National Foundation for IPM Education, the Center for Agricultural Partnerships and the MSU Integrated Pest Management Program
in collaboration with MSU Extension and the Michigan Agricultural Experiment Station.
Updated 12/20/07 Contact: J.N. Landis.