I have a broody and today was her 21 days. It is a first time for both of us.
She got off her nest this morning and someone else got in and laid an egg. She was only sitting on 2 eggs anyway. In the mean time, she found a nest box full of eggs laid today and is now sitting on them. I candled the eggs she left and 1 of them is moving, has a good air cell and has good veins. It still needs to absorb some yolk and then will be ready to hatch in a day or 2. The other is a dud. I put the good one under her in the new nest box with the new eggs. Is this what I should have done? She accepted it right away.