They're looking good, Americana's often have green feet. You might find it difficult putting them back into the pen unless it's getting dark out, then they will go back on their own. (Unless of course you have prenatally trained them to go back on command.
) They will eat lots of insects, but they can be somewhat destructive to gardens as they like to scratch in the mulch looking for bugs, and some tender plants can get dug up. That's a first class coup you have there!