I have a breeding pair of parakeets and they have the proper set up and nestbox, up until 4 days ago my female never went in the next box, but 4 days ago shes been in and out. Yesterday night, I thought noticed her vent area slightly bigger than normal. Today it is BIGGER, but she is not puffy and not breathing hard. She is actually acting quite normally, climbing up and down the cage sides and flying back and forth, and no obvious abdominal contractions. So is she egg bound ?? Or is it an egg that was calcifying and is getting ready to be laid ?