🐝 Honeybee Colony Defence and Alarm Pheromone: Wind, Diffusion and Recruitment (3D)

Interactive 3D apiary (Blender models): how honeybee alarm pheromone is carried by wind, spread by turbulence and lost, and how a colony recruits defenders. Advection-diffusion solver checked against an exact solution, Hill-function recruitment with positive feedback, and the colony cost of defence. Biology only, no medical or beekeeping advice.