Check the back page; that just has to be a buff orpington, does it not?
We are not Vets, Avian or otherwise. If you have any serious doubts about your budgies' health an appointment with an Avian vet should always be your first point of call.
Well spotted Hezz, I do believe you are correct. Tis a paler one than mine but they do come in various shades!!! Nice calendar too!! Thanks for sharing.