☀️ Summer Nutrition and Foraging Lab

About this simulation

Through the main summer nectar flow, a strong colony is largely self-sufficient — foragers bring in nectar and pollen faster than beekeepers ever could by feeding, and the honey stores rise on their own. The two things a beekeeper can still usefully influence are water access and recognising when that flow suddenly stops. This lab puts a hive, a flower field and a water source side by side so you can watch forager traffic, honey stores and water stress respond to nectar flow, heat and where the water actually is.

What the bees are doing

• Amber bees are nectar foragers, shuttling between the hive entrance and the flower field.
• Cyan bees are water foragers, collecting water from whichever source is selected below.
• Blue-tinted bees clustered at the entrance are fanning — using collected water and airflow to evaporatively cool the hive on hot days.
• The flower field itself blooms brighter and fuller at a high nectar flow, and turns sparse and dull during a dearth.

Real biology behind the model

• Water is easy to overlook: bees use it to dilute crystallised honey, feed larvae and — most heavily in summer — evaporatively cool the hive, so demand for it rises sharply with temperature, not with nectar flow.
• A water source placed close to the apiary reduces the round-trip cost of every water-collecting flight; a distant natural source (a pond, ditch or livestock trough) still works, but costs the colony far more forager-hours to fetch the same volume.
• A sudden nectar dearth — often triggered by a hot, dry spell that shuts down blossom — can flip a colony from storing surplus honey to barely covering daily consumption within days, which is why beekeepers are told to watch stores rather than assume "it's summer, they're fine."

Model-only numbers (not universal facts)

The water stress index and the honey-store percentage are composite scores this simulation calculates from forager counts, temperature and water-source distance — useful, plausible stand-ins for colony condition, but model parameters rather than measurements from a real hive.

Controls

• Active foragers — how many bees are currently out working (rendered individually).
• Nectar flow — from a hard dearth to a peak summer flow; drives how many foragers work nectar versus water, and how fast honey stores rise or fall.
• Air temperature — hotter days push more foragers onto water duty and recruit more fanning bees at the entrance.
• Water source — a nearby apiary dish keeps round trips short and stress low; relying on a distant natural source alone raises the water stress index for the same forager effort. Drag to rotate the camera, scroll to zoom.

Did you know?

On a hot day a single strong colony can use several litres of water — placing even one shallow, pebble-filled dish near the hives is one of the few genuinely useful summer interventions a beekeeper can make, precisely because it doesn't interfere with foraging itself.