Some of our pet nicknames:

Cuppy the African grey parrot: Cupster, Neville Redbottom (for his red tail feathers), greyby (grey baby), grumpus, grenemy (grey enemy), demon

Yoshi the budgie: Yosher-Dosher, Scroogles/Scroogly (when his feathers are coming in), Bopey (dopey bird)

Athena the sun conure: Teenie Beanie, Theenie, mango, lemon

Jake the budgie: Bratticus Finch