Article du Bulletin
The economic impact of wildlife damage on Hudson Valley orchards [L'impact énomique des dommages de la faune sur les vergers de la vallée de l'Hudson].
Phillips M., Forshey C.G., White G.B. & Richmond M.E. · 1987 · Proc. Eastern Wildl. Damage Control Conf., 3: 66-82.
Résumé
Apple growers in New York estimated that 3,56% of young trees and 1,2% of older trees incurred woodchuck damage each year.