Poultry Farm Question:

No, not by choice but only as foisted on them by their human "keepers". A chicken free ranging in the yard/field will eat many insects, worms etc. I have even witnessed them eating mice that they encounter. That is like a fight over the last 'hot' christmas gift on Dec 24th or an active rugby game. Watching them fight over and run with the poor mouse in the beak is amazing. They will also eat their own eggs if cracked- all these are animal products.