I've not seen a calendar that is just all RIBs but it is easy to do for yourself.
There is a company called Vistaprint that allow you to design your own calendar online and they will make it for you. I thought about doing one for my stalking clients with different views on the Estate at different times of the year.
Nothing to stop you making one using some pictures from on here, with the owners permission obviously.
There is a place on this planet for all of Gods creatures.........right next to my tatties and gravy.