United States Department of Agriculture: Animal and Plant Health Inspection Service
United States Department of Agriculture Wildlife Services: Staff Publications
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Document Type
Article
Date of this Version
July 2003
Abstract
In many localities, Canada geese (Branta canadensis) have habituated to urban settings and their populations are increasing. Reproductive inhibitors contained in synthetic grit could play a role in integrated Canada goose management. We describe and quantity the physical characteristics of natural grit collected from the gizzards of Canada geese from 4 regions of the United States. The average grit sample had a weight of 14.26 g, a volume of 2.45 ml, a grit-particle count of 1,419, and a soil weight of 6.85 g. The average grit particle measured 2.02 mm long and 1.52 mm wide, and had an area of 2.05 mm2 and a roundness rating of 1.25. Synthetic grit could be patterned after our findings to most likely be retained and utilized in the gizzards of Canada geese.
Comments
Published by Wildlife Society Bulletin 2003,31(1):265-269.