Hello all, I am a first time chicken owner with 12 three week old RIR's, Black Giants and Brown Leghorns. I am planning to have these chicken be free range for all the benefits from nutrition to my wallet. When they go out in the coop and I let them out, will they know to come back? find bugs and edibles outside? avoid predation? Will all this stuff be instinct on their parts or is there something that I am going to have to do? Please let me know what you think. Thank you so much.