I have a little Bantam hen that disappeared last weekend. This past Wednesday we found her next to the garage sitting a nest. I can't tell if there are eggs under her or not and I have no idea if they are fertile as the only Roo I have is a LF Wyandotte. How much can I likely mess with her without her abandoning the nest if I were to pull an egg out and candle it(if there are any under her to begin with). I had been seeing her early in the morning going to eat by the coop but since we found where she is I haven't seen her leave the nest once for me to be able to peek and see if there's anything there. This is the first time I have had a hen go broody at all.
I had a bantam that did that as well. As I learned through advice from here, if you want to candle or mess with a broody darkness is your friend. Wait until it's dark out then go reaching under her, she may growl or peck at you. We have too many predators for me to leave mine outside. During the day I set up a brooder for her in the coop and then that evening, after dark, I went and grabbed her and her eggs and placed them in the brooder. After I moved her I took one egg at a time and candled it before placing them under her. I found a candled egg day to day image sheet on Google images and that helped me determine roughly how far along her eggs were. I ended up having to cover her brooder for a few days with a spare junk sheet to keep her from flipping out and knocking her nest all around once the sun came back up in the morning. I would leave her in there all day and at dusk I'd take her out to eat and potty for 30 minutes before putting her back. Good luck!