From default, I used 6 plums until I got the first new feathers message then waited 6 hours. This got Sylph Green
Next, I used one plum, and got a new feathers message, I fed it 7 more plums to get another new feathers message, then waited 6 hours. This got Celeste green. http://puu.sh/bcLLS/fa5ca7c2c6.png

Chobo is base level.