Abstract: A stage-structured predator-prey model with prey using hawk-dove tactics was formulated and studied.When gain is greater than cost,all the mature prey population adopts hawk tactic.The uniform persistence of the system was proved and the global stability of positive equilibrium was studied by using Lyapunov function.When gain is smaller than cost,mature prey population adopts hawk-dove tactics.The existence of boundary equilibria was discussed and fold bifurcation was analyzed.Moreover,the globa...