I purchased and installed a 5 frame nuc into a 10 frame box about 2 weeks ago. My first inspection last week looked good with new larva and lots of capped brood. I have been feeding them since we have been so dry and they seem to have stored a lot of it along with pollen. They are taking about a quart a day. Today when I expected everything looked really good except for they were starting to build 2 queen cells towards the top of the middle frame. Inside the brood area I see very small larvae that have been layed with the last couple of days. Why would they be building queen cells if the current queen is still at work? I talked with the gentlemen I bought them from and he is willing to give me a new queen but it's a 9 hr round trip and I'm hoping I don't have to do that. He recommend giving them until next week and see what it looks like then. He was also stumped as to why they are building cells. They have plenty of room and seem to be slowly drawing new comb as I can see changes last week to this. Just wondering if anyone might have any suggestions for me?