I've read that when you are splitting a hive with queen cells, give each more than one cell to ensure at least one makes it out.
This morning, I noticed a lot of bees flying out of one of my splits. Must be orientating, not to be worried. But the way they were pouring out like their house was on fire made me wonder. The air was filling with them. Fortunately, I still had leftover equipment from doing the splits nearby and had lemongrass oil handy. I moved the box over to the tree they were concentrating on, rubbed lemon grass oil on it, and soon they landed on it. Some started going in and there got to be less and less on the sides. We'll see if they stay there.
I looked in the hive they came out, still a lot of bees there, so they didn't abscond. This is day 15, expecting the queen to have hatched out tomorrow +/-. The hive was at the original location, I moved the original queen to a new place, leaving the old location to raise queen cells. Last Thursday, I divided the hive giving more than one queen cell to some. This hive, I gave a little less resources knowing they were getting all the field bees. I had a frame of food, a couple frames of bees, empty frames in the bottom box and empty frames in the top box some with drawn comb. I was expecting the field bees to bring in nectar.
So, if anyone can answer, why did they swarm? Hardly anything there, plenty of space. This is from the same line that last year when I saw a swarm left, I divided up the box knowing multiple queen cells in each and they swarmed and swarmed. With the others, if any had more than one cell, can I expect them to swarm, too?