Drones are a big draw on the hive's resources, and they know it. I've seen where the drone cells are spotty, sometimes because the workers pulled some drone brood and left them outside the hive. Their reasons may be: cold snap in spring temps (chilled brood); cessation in a flow; and what in my perception was workers culling drones that had mites.
We've been having weather in the 70's and 80's where I am, but for the past few nights it's been down in the mid 30's so yes we've had a cold snap or two. Thank you for sending the link on nest manipulation, I will check it out in a bit.
I'm very pleased with how straight the bees are building their comb. My hive is level, but it also may have something to do with the fact that I use medium, not deep brood boxes. And yes, FG - I think life is good for them here. I think I've been pretty through in meeting their needs.
If you are not doing so already run some support wires across your foundation-less frames. Nothing like a heavy frame of brood falling out of the frame to the ground on a hot Southern day
SC - I thought I would wire a box of frames for extracting.
Oh, and good news - I live in the old home house of a farm, and after 40 + years of the surrounding farm sitting, the granddaughter has come in this spring and making it ready to farm again. This weekend a big farmer in our area came in and plowed about 20 acres of it. I understand he will plant pumpkins and/or sweet potatoes.