Yes 4 out of 10 eggs. First time hen. I believe the low hatch rate was the result of using wood shavings for nesting material and some really cold weather that came the through. The eggs sunk into the saw dust, so I think they separated from the hen and got cold. They hatched on day 22 and 23.
I have not. I try and disturb the broody hens as little as possible. I have another broody FBCM hen that had a successful hatch three weeks ago with eggs from the same flock, so I would assume that the eggs at least started out good.
I have a broody blue cochin hen, first timer, sitting on 9 eggs. 10 eggs originally, but one must have broke. She is isolated from other birds and has been GLUED to her nest. I have seen her off her nest once in the past 3 weeks and was able to snap a pic of her eggs. Today, about an hour ago...
My French Black Copper Marans are extremely broody. Out of 12 hens, I have 3 currently sitting on eggs, 1 with chicks hatched, and 4 others that went broody in the fall. 2/3 or 66.7% of my FBCM have gone broody in the past 6 months, and they are only 13 months old.