Further proof that Canada geese are vicious monsters waiting to murder us in our sleep. From the abstract: “… we suspect that this [nest-defense] aggresssion combined with the Brant’s inability to defend itself due to its smaller size led to this unusual result. The male Canada Goose maintained its attack until the Brant died.”

Dinosaurs. They’re scary.

Krauss, D. A. and Salame, I. E. (2012) Interspecific Killing of a Branta bernicla (Brant) by a Male Branta canadensis (Canada Goose). Northeastern Naturalist, Vol. 19, No. 4, pp. 701-704.