By Susan Milius
Lions in Kenya’s Tsavo East National Park already stand out because the males there don’t grow manes. Now an analysis of family life reveals another oddity: Unlike other lions, sizable clusters of Tsavo females live with a sole male lion.
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Elsewhere, investigators have found coalitions of two to four males with a female group. Yet Roland Kays, now of the New York State Museum in Albany, and his colleague observed in Tsavo five groups of about seven females each with lone males.