I found this information helpful and thought it would be good for others as a diagnostic and treatment aid. I'm going to expand on it someday.
Poultry Disease Reference
Farm Income Worksheet
Poultry Symptoms of Nutritional Deficiency
Turn a feed bag into a shopping bag
Dilly Dollop's Feed Bag Instruction Blog
dlhUnicorn's Dragonflies and Dandelions Chicken Info
I'll add other links as I find them and get them together.