That's funny, there was barely any fat on this bird. Those diagrams must just be for breeds other than the commercial cornish! I've noticed that my dark cornish are getting a bit tubby. Now that they are 9 months old they definietly need less food than the red sex link crosses. I've started feeding more low- cal squash- they love spaghetti squash!
I believe they are general diagrams for all avian species, indicating body condition (including companion birds).
Sort of an indication of how off kilter this body configuration is...
- Ant Farm