The vertical axis is the number of bees, the horizontal axis is the age of the bees. Solid (black) bars are the count of bees in the swarm, open (white) bars are the age of bees in the parental colony before swarming.
The vertical axis is the number of bees, the horizontal axis is the age of the bees. Solid (black) bars are the count of bees in the swarm, open (white) bars are the age of bees in the parental colony before swarming.