I have three racks that each hold eight bins. I have a total of 24 balls, 18 females and six males which are all mixed. Three of the males are weighing in at 400+ grams, while the other three are in the 200-300 grams range. The bigger males are becoming aggressive and tend to strike every time I open their bins, or whenever I put them in their feeding bins, while all the other snakes, big girls included, don't even flinch.

Do males become aggressive as they get closer to sexual maturity?

Thanks,
Papo