The queen will usually be on a frame with eggs and uncapped larvae. When she pauses, a circle of attendants will form around her.
I like marked queens for the reason you mention.
I stuck every egg I had in the incubator over the last couple of days.
It's gotten worse. I have a hav-a-hart and a duke dog proof leg trap. I caught a large coon in each the last few days. I know some of the attacks were raccoons since the siding was pulled off but worse yet, I now have a new nemesis. I was amazed something could get under the door of the brooder house since it is only about an inch to the concrete floor but I've seen raccoons squeeze through small spaces. Well, I battened down all the openings on the building that had only 4 birds left, a rooster and 3 hens. Yesterday morning I went to let them out and they were all dead. I couldn't figure out how anything got in there. It turns out I have weasels. Yesterday they killed all the baby chicks that were out foraging with the broodies in the middle of the day. They're very hard to trap. I'm going to have to get a bunch of leg traps and keep the remaining birds locked up till they're gone.
I'm devastated at the number of losses. In just 4 days I went from 40 hens, 10 cocks and 16 chicks to 14 hens, 1 cock and 8 chicks.
Never had a weasel here in 20 years, till now.
Weasels can be terrible!
I hope the slow down soon. The crazy winter must have really brought out the predators in your area.
Someone posted a weasel trap. It had something to do with burying a pickle jar?