I read years ago that chickens do not like change. I was careful to always feed my girls the same feed. About a year ago I switch feeds because there is a feed to store close to my house as opposed to driving far away. The girls didn't mind. Just two weeks ago the new feed store changed the feed. I gave it to my girls and the won't eat it. It's been two weeks and I am wondering, what are they eating and how long will this standoff last. They do free range in my yard and I do put food out for them in the compst heap, but can that be enough. They don't seem unhappy and egg production has not been effected yet.