Ok here is what was wriiten about feed. I do not mix 2 medicated feeds for example: I do not mix medicated chick starter with medicated game/turkey starter because each has a different medication. But I will mix medicated chick starter with nonmedicated game/turkey starter. Too much protein can cause leg issues as stated here on UPA
http://www.peafowl.org/ARTICLES/17/
Chicks:
Peachicks should be fed
medicated game starter (if you can find it) or medicated chick starter mixed with gamebird starter. Make sure to get the starter with amprolium for the prevention of Cocci and I believe Purina offers starter with AND without and both are considered medicated due to the medication included for other problems. Starter should have 20-24% protein, which is higher than chickens (For example, my chick starter has 18% protein, my game bird starter has 24%... I mix the two which should land them somewhere in the middle). Substituting their starter with other foods can be harmful. They do not need grit if they are only eating the correct starters. If you feed them nearly anything else (which you shouldnt do for a couple weeks at least) then they will probably need some grit sprinkled on their crumbles. Cleaned/baked sand works well for this.
Acceptable treats for chicks (that can be fed without grit) include yogurt, egg yolks or whites, and non-instant oatmeal. The instant sort has too much salt and sugar and is hard to digest.
Adults:
Adult birds can be fed gamebird maintenance crumbles/pellets. You can feed them normal chicken food but it will not have sufficient protein. We made up for this in the past by feeding them kitten hard food as a supplement/treat. If they are penned without access to dirt or pebbles, they may need supplemental grit.
Treats for adult birds can be: hardboiled eggs, melons (watermelon, cantaloupe, etc), squashes, tomatoes, greens (spinach, lettuce, etc), beans, crickets, wet cat food, pasta, rice, raspberries, strawberries, blueberries (etc), peas (har har, feeding peas to peas), cucumbers, bread (may want to moisten), peanuts, raisins, cooked meats (never raw or partially raw), grapes, corn well, you get the picture.
What NOT to feed to peas: never feed raw meats. Also be wary of what bugs you give your birds, as some can be hosts for other parasites/worms (and yes they will eat these insects anyway, which is why you worm your birds at least twice a year by a different wormer each time).