[iowamark]

Chickens are so stupid that they will defecate and turn around and eat their own feces.

[foundedonpurpose]

Have chickens, yet to see that happen. Unless they cannot range and are stuck in a small cage.

[Ruy Dias de Bivar]

—In the olden days people fed grain to cattle, then ran hogs behind the cows to eat the manure for the undigested grain, then ran chickens behind the hogs for the same reason.