city honeybees: spring cleansing!

Monday february 8th, 14°C and all bees are flying out. They start their spring cleansing flights, and they pull all dead bees out of the hive. The temperature inside the hive is rising up towards 33°C – this means that the queen started ponding eggs again, and that there is young brood to be taken care off by the worker bees.
I wonder how it is perceived by the bee colony, to fly out and to find nothing: no pollen yet, no nectar neither. The bee-flights are executed close to the hive. The bees stay low to the ground, as if they are looking for something …

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