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.
What do Canadian geese eat and how do they get it? Canadian geese feed on many different types of foods: grains, grasses, alfalfa, clover, wheat, beans, rice, corn and also aquatic plants. The flocks fly to feeding fields in the morning and afternoons. For the rest of the day they are on water.anadian geese feed on many different types of foods: grains, grasses, alfalfa, clover, wheat, beans, rice, corn and also aquatic plants.