Honestly, being a novice, I don't know the exact details of how a chicken's digestive system works, but I'm going solely upon experiences. I guess they're really not all that sensitive. Best wishes with your flock!
-Alex
That's a very good question! As a cat owner, I at one time might have wondered that myself. Actually, though, I don't think the same concept is the case with poultry given my experiences. We first started out feeding our girls Purina Naturewise, then abruptly changed to Kalmbach organic feed...