Had to add another deep for brood because the bottom two were totally full. The yellow hive is a monster. Is that a queen cell or swarm cell at the bottom of the frame?
#bees #beekeeping #grownostr 
Discussion
The cell being built at the bottom of the frame like that suggests that they planned it, either to replace an old queen that's wearing out, or to make a new one to swarm (emergency queen cells to replace a dead queen will be on the comb anywhere they can find brood of the right age to groom into a queen). If the colony was running out of room, then they are likely to have been planning to split the hive. Both of those together (crowded hive and pre-planned queen cell) tend to suggest swarming activity, especially in spring.
I’m not sure I feel very confident about how to split this hive, so I’m going to set up a swarm trap nearby to try to catch my own bees if they decide a swarm. Should be interesting. Thanks!