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166 FACE OFF
In hopes of attracting females, two male greater prairie chickens participate in an elaborate courtship display. Their displays consist of expanding the air sacs on the sides of their necks, drumming their feet in stylized dances, snapping their tails and make a booming call that can be heard for over a mile. These mating rituals occur on elevated, grazed areas in grasslands known as "leks" or "booming grounds." Once inhabiting the wide plains of the central United States, the greater prairie chicken has fared poorly as its grassland habitat has been converted to other uses.Burchard Lake Wildlife Management Area, Pawnee County, Nebraska.