In the case of illness care, there are really sick animals who need to be helped with medication.
When I recently did a pigeon research on location, there was a fancier who had a pigeon who had sworn for half a year. The pigeon looked good at first sight. Not directly the type of pigeon that has sworn. The fancier did not put the pigeon in quarantine, but placed it back between his other pigeons. We looked at the pigeon and we could not find little crazy things.