U.S. Department of Agriculture: Animal and Plant Health Inspection Service


Date of this Version

February 2004


From the Proc. 21th Vertebr. Pest Conf. (R M. Timm and W. P. Gorenzel, Eds.) Published at Univ. of Calif, Davis. 2004. Pp. 136-139.


Many species of birds in Uruguay frequent vineyards and damage grapes, both species that are considered crop pests and species that are protected by law because their conservation and protection are desirable. We surveyed 70 farmers in the Department of Canalones, the main grape growing region in Uruguay, to determine their perceptions about the nature and severity of bud depredations and the methods being employed to reduce such damage. Sixty-seven percent of respondents reported receiving damage from birds. Bird depredations were considered a serious problem by 58% of respondents, a moderate problem by 19% of respondents, and a minor problem by 19% of respondents. The species most often cited as causing damage were Picazuro pigeons, great kiscadees, and creamy-bellied thrushes. Respondents use a variety of methods to deter bud depredations including firearms, toxic baits, visual deterrents, and chemical repellents. We describe a research proposal to determine more precisely the magnitude of bird depredations in Uruguayan vineyards, to adapt and/or develop management tools, and to formulate and implement a pilot management plan for reducing bird depredations.