Mating budgies, Soft egg...?

Hello! I have four budgies. Three male and one female. They have all lived together in a big cage for about 3 years now with no issues whatsoever. This morning when I opened up their cage, I found an egg on the bottom! I was absolutely shocked and was not expecting it. I realize who her possible mate is but I never thought she would start laying eggs. So I decided to put a nesting box in her cage and she’s been in there all day. I also noticed there was a little bulge on her lower abdomen so I’m not sure if she’s going to lay another one. She has a vet visit this upcoming Tuesday but I have a few questions that maybe you can help me with. The first one being is her diet good enough?

I feed all of them fortified seed with no pellets. I’ve tried for years to feed them pellets with no luck. I have a mineral block and a cuttle bone in the cage at all times and she is always nibbling on it. I also decided to put a cuttle bone in her nesting box. They also get Greens daily which they love. Will this diet be enough for her?

My other question is this morning when I was examine the egg, it had already been cracked. (Probably because she laid it when she was on the perch). But I also noticed that what was left of it was really soft. Should I be concerned? Do you have any advice for me on this topic? I need all the help I can get until Tuesday! Thank you!!

I know very little about birds and eggs, but a bulging abdomen can be a symptom of egg-binding, which can be deadly.

She is at the vet right now. I decided to take her as an emergency situation and I’m so worried for her ��

I hope everything is okay!

I'm so happy you took her to the vet. For the future please replace the eggs with dummy eggs and remove the nest box so this does not happen again.

Keep us updated on her!