MALE-DOMINANCE AND VARIATION IN FLESHY HEAD ORNAMENTATION IN WILD TURKEYS

Male characteristics used by females in choosing mates for good genes may also reflect outcomes of male-male competition. The extravagantly ornamented Wild Turkey Meleagris gallopavo is an appropriate species i n which to test this relationship. Wild Turkeys have a highly competit ive social system in which combat and other dominance interactions bet ween males are common throughout the year. Tn this study dyadic domina nce trials between unfamiliar captive males demonstrated that a male's relative snood length, a character previously shown to be used by fem ales in mate choice, is also predictive of the outcome of male-mare co mpetition. Complementary trials using artificial males confirmed that live males assess the snood length of potential competitors independen t of other male characteristics. In an earlier study snood length was shown to be negatively correlated with coccidian parasite load and pos itively correlated with male condition in free-living Wild Turkeys.