We opened up one of our Nuc's today to see how they were doing. We located the queen and we did not have our queen catcher with but the tube and marker. We saw her in the middle of the frame looks like she was laying an egg. So we quickly dabbed her with a drop of paint. she was quickly covered by bee's. We thought that it was to clean off the paint. Turns out they killed her. Looks like they chewed the back end right off. Now we are not sure if they did it because of us or we just witnessed what was going to happen anyway. We did find them building a queen cup on another frame. There was white inside and they were finishing building it. Might be closed up soon. Ever seen this?