Here is a recipe for bread from one of the top cockatiel breeders in California
2 C cockatiel crumbles
1 banana
1/3 C wheat germ oil*
6 eggs--with shell
3T pumpkin, yams or squash
1/3 C vegetable oil
1 1/2 T applesauce or 1/2 apple
1 C thawed frozen mixed vegetables
1 C cooked dry beans
1 C cooked brown rice
2 C corn meal
4 T baking powder
Food process first 8 ingredients. Add beans & rice and blend til pulverized. Add to cornmeal and baking powder. Mix well. Add water if too thick. Bake at 325 degrees for 40 minutes til done.
*You can find wheat germ oil (for horses) at most feed stores.
I freeze the stuff crumbled, zap about 1T per bird per day. When they are feeding chicks, I double that.