I'm new to finches and the forum. I just adopted a pair of shaft tails. They took to each other as a new pair very quickly. The first night they cuddled on the branch together. the next night and there after they have been sleeping in their little nest.

1. Only one egg and it's been a week an half. they are not incubating what do I do? take out the egg? wait for the rest of the clutch?

2. Today it was all normal behavior, singing, churping.... then I hear noise from hanging out on the bottom of the cage. Our lady is sitting/hoping on the bottom. I went to change the water and she didn't move up to the branches ( like normal) I'm worried. she looked like she was injured...she's wobbly, but can't really tell. Is she about to lay an egg? He is showing mating behaviors. (tired to hop on) I just put in egg food and she eating it. maybe she needs more nutrients?
not sure what this all means

any advice would be appreciated....thank you!