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.
Males hiss more than females. They also tend to bite more than females. Listen to the sound of the goose call. Male geese have a higher-pitch honk than females. Male geese do a display during mating season where they flap their wings and chase away other male geese that are competition.lso, a male goose by himself stands guard. Females by themselves tend to sit down and nest. Examination: You can examine the genital area to determine a goose's sex. Hold the goose with its belly facing you to see the cloaca.