Good help from A few here. Take a look at the milling dates on your feed bags. Don't buy feed past 2 months from the mill date regardless of what others may tell you. Start using poultry vitamin-electrolyte-probiotic powder in waterers 3 times a week. Keep Corid 9.6% or 20% powder, effective wormers like Safeguard liquid suspension labeled for goats or Valbazen suspension, antibiotics like Neomycin and Amoxicillin ,which are very effective against many intestinal bacteria, on hand. Even if some expire and you never use them, you'll be glad to have them when you need them. Birds can quickly descend insickness if we don't act quickly.