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Figure 52.9 Animals Defend Territories of Different Sizes (A) The nesting territories of many seabirds consist of only as much space as the birds can defend without leaving the nest. (B) Male elephant seals fight vigorously to defend areas of beach where females haul out of the water to give birth to their pups. (C) Male greater sage-grouse gather at a lek in Colorado to perform displays aimed at impressing females and winning the opportunity to mate.