WHILST the introductory message may imply interaction between chickens and concrete in an undefined context I would like to take this opportunity to clarify. Any interaction between the two mediums should only be undertaken when the concrete has set and be between the underside of the chickens foot and the screeded surface of the concrete.
Concrete batching should not at any time be undertaken with the involvement of chickens. At best the surface of your concrete is at risk of chicken imprints and at worst it would not be easy to get a level finish. Just remember chickens are for eggs. Concrete is for walking on and making manly stuff.