From Dwarf Fortress Wiki
Beekeeper is the skill associated with the beekeeping labor. Beekeepers are responsible for uilding hives, installing colonies and collecting hive products. A manufactured hive is required before it can be placed.
- Dwarves have a hard time splitting hives. They also have a hard time keeping track of wild colonies of bees that die out. Having the beekeeping labor enabled on only one dwarf at a time may alleviate these problems. See Bug:3981 and related bugs.
- Removing and rebuilding empty hives usually fixes beekeepers stuck trying to install colonies. You can see which ones are empty and remove them the same time with 't'.