Hawk-Dove Game | Iris Lab

Resource value (V): 4.0

Injury cost (C): 6.0

Population size: 200

Initial Hawk freq: 0.30

ESS Hawk frequency: — | Payoff matrix loading...

Payoffs: H vs H: (V−C)/2 (equal chance of winning/injury) | H vs D: V (Hawk takes all) | D vs H: 0 (Dove retreats) | D vs D: V/2 (share equally). When V < C, pure Hawk is not ESS — mixed equilibrium p* = V/C emerges. When V > C, Hawk is always better: pure Hawk ESS. This classic Maynard Smith (1973) model explains ritualized animal contests.