Xen- (prefix): Foreign or other. As in: 1  Xenoantigen -- An antigen that is found in more than one species.  Xenograft -- A surgical graft of tissue from one species to an unlike species, genus or family.
Diet. Snow Geese feed almost exclusively on plant material. During the breeding season, they eat many seeds, leaves, and roots of aquatic vegetation. The very young birds feed on invertebrates. Berries become more important in the fall. In winter, waste grain from agricultural fields has become a primary food source.
Report Abuse. ALICE: Canada Geese weigh about 25 pounds at maturity, so they sure DO NOT nest in trees. They sleep on the ground, in groups, with one goose awake, at all times, to act as a sentry.Geese have webbed feet so they can swim very well, BUT their webbed feet cannot grasp a tree branch, as they don't have the ability to curl their toes around it.eport Abuse. ALICE: Canada Geese weigh about 25 pounds at maturity, so they sure DO NOT nest in trees. They sleep on the ground, in groups, with one goose awake, at all times, to act as a sentry.