Extended Data Fig. 2: Candidate equilibrium drifting levels from a colony with ϕ1=1.
From: Diminishing returns drive altruists to help extended family
We assume a monomorphic sex ratio \(\bar z\) and level of female helping \(\bar x\) common to all colonies. Diminishing returns become more likely drivers of cooperative drifting as the level of helping rises (top left corner). \(\bar m = 1\), ϕ1=1, d♀=d♂=0.5.
