The bees don't really take much maintenance, but what they do happens twice a year -- spring and fall.
At this time of year, the bees are reaching their maximum population, so giving them more room in their hive is the basic chore, but I like to have a box or two all ready to go in case of a swarm.
As I look back at my blog, the time between the last week of april and the first week of june is prime time for bees swarming, and truth be told, that's not a bad thing. They neatly divide the colony, produce another queen, and if you can capture the swarm, you've now added a new hive to your farm.
The main bloom around here that produces a lot of honey is the blackberry bloom, and it's coming up pretty soon. So adding the extra space now allows the bees time to draw the comb and be all set for the nectar flow that is coming.