shrinking paunch and slight limp on 6 month old gosling

[zoeedougherty]

We have had our Toulouse goslings for going on 6 months now. They have a hutch that they go up in every night and are free range on 2 acres all day, with plenty of grass. They have a big pool and honestly seem quite happy. We noticed earlier this week that one of our goslings (still unclear on gender) had part of their paunch that is not hanging anymore. It looks like it’s almost sucked back up? They also keep standing with their leg on that side pulled up in their body. Noticed a small limp originally but it’s not as prominent now. They tend to be clumsy so we were hoping that some time would heal the issue of the leg, but the paunch still hasn’t dropped back down. Looking for some guidance or if I should be panicking trying to find a vet?
The gosling (we call him/her Lois) is acting fine overall, still playing and appetite is normal.
Thank you!