system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: How do beekeepers know when to stop taking honey from bees so they have enough food for the winter?

Also:  In naturally occurring hives or in the case where a beekeeper just stopped taking the honey.  What would the bees do once they deemed they had enough food?  Do they just stop leaving the hive or does that excess of food cause the hive to expand or break off in to another hive?
gpt
We generally use deeper boxes for the bottom two levels - one is for bees to raise young and store pollen, the other is for honey … which we leave for them for over wintering. We set shallow boxes on top during honey flow ; from these the surplus honey is collected.