I never was able to find her nest. She went back to the area several times and I followed her but I think all her eggs were gone. She seemed rather distraught, especially when I locked her in the run last night. I think she wanted to go check again, but with the spot on a predator's radar I wasn't going to take that chance. The eggs were only ~10 days into development, so no babies yet. I feel bad for them though
She and guinea hen #3 were both very interested in the guinea nest under the coop, and I almost thought they would try to take turns sitting on it.
I counted the other hen's eggs yesterday and there were 19 in there. Last night she slept on the nest so I suppose she is officially in mommy-to-be mode. She was not happy about not getting to leave the run with the rest of the guineas this morning, though. I think mainly she wants her mate by her side, but he left this morning. He wanted back in to be with her but I couldn't get him to come to the gate before I had to leave for work. Hopefully I will have 19 little keets running around in 4 weeks.
I don't think it's an actual magic number, per se. When I found and collected one hen's eggs last year there were over 40 in the nest and she hadn't gone broody. At the end of the laying season last year I finally let two go broody and they each had somewhere from 15-20. I think it's a combination of hormones and maybe something is triggered by the level of pressure underneath them on the nest telling them its full, maybe. I have had chickens go broody on a single egg (real or not), but not a guinea.
I did get to candle the eggs under the Brahma bantam yesterday while she was out taking a break. I really thought they would be dead because she went back to the wrong nest last week and she was off of it for at least a day. There was movement in all of them, though, so maybe they will be okay. I am pretty sure they should hatch this week. Their development looked good. I thought the air cells looked a bit big, but considering I don't know exactly what day they are on, its hard to judge accurately. I think they should hatch by Thursday, though.