Nickname option

I would really like a nickname option to my rabbits info. All of my rabbits have an armslenght of a name, and it gets frustrating to go through all steps in handling and care, with that long description of names, just so my petsitter can get a hang of whom i speak/write about. I need the rabbits full name in sake of the pedigree, but in daily care, their nickname would suffice plenty.