Lyrebird Display Court: Song-Synced Territory Simulator (2D)

The 3D original renders a generic templated "animal lab" scene — a peacock-shaped mesh labelled as a lyrebird, flocking around a shared config-driven boid script. This 2D companion instead builds the real mechanic implied by the title: a lyrebird's forest display court. A weighted attraction score combines dance-song rhythm precision, effective tail-fan intensity (itself capped by a live energy-balance ODE) and court-clearing quality; a logistic function turns that score into a female arrival rate and a mate-acceptance probability, while a separate stochastic process sends rival males to test the territory — and whether the resident successfully repels them depends on how much energy his display has already spent. Push display intensity to the max and the attraction score climbs, but energy drains fast enough that the next rival intrusion is likely to cost the court; found circumspectly, the model reproduces the real honest-signalling trade-off behind lyrebird sexual selection instead of an arbitrary flock animation.