I've got a lot to learn.
In previous years, I've had near 100% success rate in starting hives with a frame of brood, a frame of stores, and a good qty of nurse bees.
This year, things are different. Yesterday my daughter pointed to the ground around the 7 nucs and said "why all the dead bees, dad?". Hmmm.
Well ... from what I can tell, it's because of 2 things: a) I've never had really strong (fairly healthy) hives until this year. & b) since I almost lost a couple of nucs last year do to starvation (me not realizing their needs in advance) I thought I'd avoid that problem this year by placing feeders (jars of sugar-water inside on top) from day 1 after creating each nuc.
I've had to restart 3 of the nucs that didn't even try to raise a queen. Last week I reduced all entrances down to 1.5 inches. Now I think it should be smaller. I'm also thinking feeding should only be put on as needed.
2 of my nucs are large swarms that my buddy had me come get. They are both peaceful towards me, but I can watch them leave their hive and run over to the nucs next door, and start a brawl.
I'm realizing that my really peaceful bees of past years, were really just 3/4 dead bees. Things are a lot different with large healthy(er/ish) hives around. ... Lots to learn (all over again), lots to learn.