This is a great idea. I found it hard to figure out what was happening and why. But when I finally got one right the reward was worth it. Even getting it wrong was fun as sometimes I got a little tune going.
Would like a little more guidance on how to play. The Heron’s clues were obvious after I figured out what to do.
Then again, I’m not a puzzle fan, so that may be just me not wanting to think too hard.
All in all, great idea. You should develop it further.