After a long summer the bees now experience the first cool autumn days. After the bee colonies were fed for the winter, and during the last weeks enough winter bees have been hatched, they stop now the brood activity and change over to the energy-saving winter mode.

This can be clearly seen from the temperature curve in the brood chamber: If the bees kept the brood-room temperature constantly since the spring on somewhat over 30°C, it drops now on only scarcely over 20°C (yellow curve).

The temperature profile gives information about where in the box the bees are, in this case a bit left of the center.

Live data from the hive scale