@andree
No, the vent pulsing is not normal. It usually indicates that they are trying to pass something. If it is in rhythm with her breathing, it can indicate respiratory issues as their are a couple of large air sacs in the body either side of the vent which act like bellows and that can...
Hi
How old is she?
Can you post a photo of all of her? We can't see her back end which is important when there is a possibility of a reproductive disorder.
It may be that she has a shell less egg in her system which is very hard for them to pass and really knocks them out of sorts. Can you tell...