Fig. 1. Mean feeding repellency associated with six concentrations of Avipel1 seed treatments (a.i. 50% 9,10-anthraquinone; Arkion1 Life Sciences, New Castle, DE, USA) offered to Canada geese (Branta canadensis) at the National Wildlife Research Center in Fort Collins, Colorado (USA), August 2008. Repellency represents consumption of treated versus untreated corn offered concurrently during the 2-day experiment (n = 8 geese/concentration).