So, it looks like Imma gonna reply to myself. TODAY the whole flock got into hitting the keys, almost. About three did not, six did. The best one, a Choc Orpington, knew every single time to hit a key and get fed. She could have been Liberace's chick. The rest caught on, but did not perform as well. The lead chick kept looking to my hands holding the treats because someone also taight them to beg.
They're not playing "Mary Had A Little Lamb" yet, but well see.
Any updates?