In the US, many people do yearly wellness exams.Lol, the various vets I use send reminders via postcard or email saying "your pet X is due for his/her yearly check up".
-Kathy
I guess there's a ' market ' for everything. Considering the majority of vets aren't specialised in avian medicine I would be a little skeptical about that. You don't go to a gynaecologist for a tooth ache. We have an Equine vet for our 10 horses , an Avian vet in case of chicken emergency or disease and a regular old 'farm visit ' vet for our cattle and goats. For the cats and dogs it's a trip into town to the regular vet.