@birdsandbats Common Gallinule was only fairly recently split from Common Moorhen and I'm not sure the split is 100% accepted across the authorities. I wouldn't be surprised if this was a gallinule.
@ThylacineAlive I believe all four major taxonomies accept this split now. The signage mentions it ranging throughout the Old World but doesn't mention the New World, which is why I'm think this might actually be a moorhen.
Or it might just be a gallinule with a weird sign.