Ok im sorry if these questions have been asked but I didnt feel like reading througb 477 extra pages

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Ive never hatched eggs before, I was considering venturing into incubation this year and decided to wait another year on that. I did however doscover a broody hen last week and thought... y not. So I grabed 2 dozen random fertilized eggs from down the road and put them in her favorite nest box. Shes going on day 5 of sitting on them so it seems like shes in it for the ling haul but this being a whol new venture for me I have questions about how to handle this.
I do want to candle on days 7 and 14 to try to get rid of duds that may expolde and remove my other hens unfertilized eggs, but how do I know when this girl will be taking her daily break for food and water!? Im worried about just nudging her out to check them bc I dont know of that could hreak her broodiness?? Is that a possibility or legitimate concern?
Also shes up in the nest box which is all fine and dandy I guess until they actually hatch right? I shoupd move them before hatch so they dont fall and get hurt once they hatch? If so when is the least detrimential time to move them? And how do I attempt to make it less stressful on mama and less likely to break her broodiness? Should I just close in the besting box the day they are supposed to hatch and move them after they are born?
Also, if id like to keep them in the coop but seperatef from the rest of the flock (hopefully making intergration simpler in the long run) how much space do I need in the enclosed area for mama and each baby that makes it? Our coop isnt very big so im working with limited space.
And lastly we have verl little predator proofing in the roaming area so id like to keep them in the coop round the clock while theyre still small but at what point should I be able to let them co-mingle with lesser chance of getting picked off by birds like crows and such?
Sorry for the mouthfull! And thanks in advanced!
Well, I am very far from being an expert, and frankly, if our two hatching eggs actually hatch, it will likely be in spite of my efforts and not because of my efforts lol. Still, we are on day 16 and two from my original 9, mostly scrambled shipped eggs, are still going strong. I candled on days 4, 7, 12 and 14. I just stole them from under her, one at a time, carried them with my very cleanly scrubbed hands to our windowless bathroom, and candled as quickly and as gently as I could, before returning and slipping each egg back under her. She really didn't seem bothered at all. I guess as incubation goes on longer, the eggs get more sensitive to bacteria, and in the early days, they are more sensitive to jostling, so I guess my advice is to be as gentle as possible. We really only had 2 viable in the first place, so obviously my candling didn't destroy them. I am not intending to candle again.
I also have the same problem of an elevated nesting box in a coop, with limited other space. We TRIED to move her, and it didn't work out. We partitioned off another section of the run, and put a storage tote in there that we cut a doorway into. I made it so perfect, put her in thereat about day 10, and she took to it immediately. Well the next afternoon, I returned home from work to find her running around in the main coop, kind of looking crazy and frantic. Her eggs were completely cold, and she had somehow flow out of the partitioned area and was unable to get back in. I just grabbed her, the eggs, and put her back in her nesting box where she had began! Shockingly the eggs continued incubating and were alive at days 12 and 14 still. Now I have purchased an enclosed mini coop online for about $100 and it is due to arrive on what will be day 19, which I know is a terrible time to be involved with moving eggs, but I have no other ideas. We preplanned though and placed her eggs in a removable small tub under her in the elevated nesting box in the coop so we can lift it all out, along with her sitting atop, and then will relocate the whole contraption to her to the new, fully enclosed coop on Day 19. I have spent way too long worrying about all of this! so my advise is to be sure to fully segregate your hen if you move her and make sure her new area is 100% enclosed so she can't leave. I think mine wanted to visit with her BFF, as they are very closely bonded, and managed to somehow fly out, and I think she was actually quite distressed about being unable to find her way back to her nest.
And that's all the advice I have. Hopefully others can reply on the rest.