These are amazing 3D printed miniature 1:12 birds. You can purchase one already painted or buy a kit to paint your own!
The Finch is: 1/4" tall (6.5mm)
The Owl is: 21/32" tall (17mm)
The Parrot is: 2 1/2" tall from head to tips of tail. (6.58 cm) If this is to large for you for 1:12 then please choose the 1:24 one! This one is meant to mimic a 2 1/2 foot tall bird in real life. One of the largest in the world.
The 1:48 and 1:24 can be smaller parrots in 1:12 too.

Bird Cage Kit