Most winter colony losses aren't caused by an empty hive — they're caused by isolation starvation: a tight winter cluster can only move slowly through cold comb, so it can starve to death on an empty frame while full frames of honey sit just a few centimetres away, unreachable. This simulation models a hive cutaway with a cluster of bees over two comb frames. Each hexagonal cell holds honey; the cluster consumes the nearest cells first, and how far it can physically reach depends on temperature and colony size.
Watch two numbers: stores in hive (all the honey that exists) versus stores the cluster can reach. A colony can look fine on the first number and still be dying on the second — that gap is exactly what a beekeeper is checking for during a "hefting" or quick winter check.
Emergency fondant is placed directly over or touching the cluster rather than in a feeder some distance away, because a starving or cold cluster often can't safely break formation to travel even a short distance to reach food.
A 3D hive cutaway shows a winter bee cluster over two comb frames. Honey drains from the cells nearest the cluster first — while cold weather limits how far the cluster can travel to reach honey that still exists elsewhere in the hive. Add emergency fondant directly onto the cluster to see a starving colony recover.
Colonies often die with honey still in the hive because a tight, cold cluster cannot safely break formation to reach it — a real phenomenon called isolation starvation. The simulation separates "stores in the hive" from "stores the cluster can reach" so you can watch the gap open up.
Lower the temperature and raise colony size to see consumption rise and reach shrink. Watch the status pill move from Healthy to At risk to Starving, then click "Add emergency fondant" to feed the cluster directly and watch stress and population recover.
Fondant and candy boards are placed in direct contact with the winter cluster — not in a distant feeder — precisely because a cold or weakened cluster may be unable to travel even a few centimetres for food.