Rosa mapped her bees by the flowers. In spring, the clover bloomed in the southwest corner, and that's where the swarm clustered — a tight square of activity in the bottom-left of her survey grid. By summer the lavender along the north edge drew them up, and the whole top row hummed. She could have predicted autumn by the orchard alone: the late apples in the northeast corner pulled every last forager to the upper-right quadrant. The rest of the grid went silent. Come winter, the hives clustered back at the center for warmth, a tight knot of bodies riding out the cold.