🐔 Hen Flock Ration Lab: Egg Mass, Feed Conversion and Cost per Dozen — 2D Henhouse Plan and Ration Curves

2D Canvas companion of the Hen Flock Ration Lab: a top-down plan of the henhouse and run with hens, feed trough, oyster-shell dish and nest boxes, plus ration-vs-egg-mass, phase-plane and cost-per-dozen curves computed with the same model as the 3D version.