I have 2 overwintered packaged hives that I installed last May that are absolutely booming. I opened both up today to check on the conditions as there were so many bees. Both hives were jammed packed with bees, top to bottom. I use 8 frame medium hive bodies. Wall to wall bees on every frame. On one hive on the 2nd box down from the top, it had about 10 or 12 queen cups. No eggs or larva in none of them. I proceeded to take out the 4 outside frames of each box (frames 1,2,7,8) and replaced them with foundation for them to draw out. Some were honey and nectar frames I took out and I put them above in the supers. I replaced about 16 frames with new foundation some were just half sheets. The queen had laid in all 4 boxes, eggs, larva, and capped brood everywhere.
The maple trees are just starting to bloom here in my area so there may be some nectar flow going on when the weather allows it, so I put 2 draw out supers on top of the hive. It seems a little early for them to have built up so much. With that many bee how long before they have the foundation draw out. It seems as if they are making swam preparation but we're 3 to 4 weeks before the major flow. Is there anything else I should be doing? Or have I taking the right steps? I am seeing a lot capped drone cells but haven't notice any flying. I believe I may have to check them hives weekly now.