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.
Collecting Goose Eggs. 1  1. Gather the eggs in the spring. In the Northern Hemisphere, most geese breeds begin laying their eggs in March or April. 2  2. Collect the eggs in the morning. Geese generally lay their eggs in the morning, so you should collect them late in the morning. 3  3. Provide nest boxes.