Re being afraid your broody might lose interest if u move her; if a predator gets her, you will lose your broody AND the eggs. So yes move her, after dark when she will be quiet and calm. If possible, lock her in her new nestbox/crate overnight until u can check on her/let her out the next morn. If she keeps switching nestboxes, can u give her her own special broody enclosure? When one of my broodys starts setting, i move her & eggs to her own special private secure broody pen, where she can eat, drink, poop, dust bathe, & raise her chicks. When u move her, that is also the perfect time to candle & check the viability of each egg. U will probably think of many more questions as the days pass while she is setting. U can post more questions here, or google your questions where u will get lots of feedback from past threads. As far as candling the eggs, there are many candling pics on internet that show how to tell if an egg is nonfertile, growing, or has died, as well as pics that show a chicks growth progression within the egg as the days pass. Its ok not to know much at first, because there is a wealth of info here that will help u through.
