Answer: swarming

AnswerCrossword Clue
SWARMINGThronging.
SWARMINGBee activity
swarmingMove somewhere in large numbers
swarmingthe act of swarming
swarming(of insects) Move in or form a swarm
swarming(of honeybees, ants, or termites) Issue from the nest in large numbers with a newly fertilized queen in order to found new colonies
swarming(of a place) Be crowded or overrun with (moving people or things)