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.
The goose will talk to the goslings and this will keep them under her for the first couple of days but as time goes on, the bravest will start to emerge more and more until eventually she abandons any unhatched eggs (which can then be removed from the nest) and will take the goslings to food, water and fresh grass.