What do people do when the weather forecast is for a severe snow storm? Run to the grocery store and buy a month's worth of food.
What do honeybees do when the last day in March reaches 79 degrees? They try to haul home a month's worth of pollen of course!
Even the upper entrance is busy beyond capacity.
This honeybee is storing the pollen away for later use. There will be a lot of mouths to feed. The Queen is laying eggs everyday.