Abstract
Evolutionarily stable strategies(ESSs) of asymmetric animal contests are
formulated by using Bayesian games. A criterion which is a generalization of that of
Abakukus([1]) and a strengthened Selten’s theorem([9]) are given. As an example, a
Hawk-Dove game with roles, in which the animals having the same role may possibly
meet each other, is investigated and all possible Nash equilibria and ESSs are obtained
for given parameters.
