🐝 Demaree, Tolin and Beyond

About this simulation

Swarming is triggered by an overcrowded brood nest: too many nurse bees, too little room for the queen to lay, and mounting pressure to divide the colony. Structured hive manipulations relieve that pressure without losing the colony's workforce, by rearranging comb, brood and the queen within the same set of boxes.

The techniques modelled

• Standard hive — no intervention. Brood and bees accumulate through spring, congestion climbs steadily and swarm impulse rises with it.
• Demaree method — the queen is confined below a queen excluder in the bottom box on empty drawn comb, while all existing brood is shifted above the excluder. She resumes laying at once in open space; the brood above hatches out over about three weeks, emptying itself and relieving congestion without splitting the colony.
• Tolin repositioning — a one-sided nest compaction: the brood nest is pushed to one side of the box, freeing a contiguous block of space on the other side for the colony to expand into, instead of being spread thin and hard to defend or heat.
• Comb rotation — frames are cycled between the centre and edges of the brood nest on a rolling basis, so no single comb becomes bottlenecked with capped brood, spreading the queen's laying pattern and evening out congestion over time.

Controls

• Technique — switch between the four management approaches.
• Days since manipulation — advances the colony's brood cycle (roughly 21 days, egg to emergence) so you can watch each technique play out.
• Hive bodies — the number of stacked boxes, i.e. multi-body management.
• Queen excluder — toggles the excluder grid; Demaree requires it and forces it on.
• ↺ Reset view — restores the default camera angle. Drag to rotate, scroll to zoom.

Did you know?

George Demaree first described his method in the American Bee Journal in 1892, and it remains one of the few swarm-control techniques that keeps the entire adult workforce together in one hive while still resetting the colony's swarm impulse.