This is a solid puzzle game. I'm not sure exactly what the connection to the theme is. Is it that you control only one of the characters at a time? Because that seems like a characteristic of most games, sorry if that sounds a little harsh. The puzzles are well thought out though, and I like that there's no need for an extensive tutorial: The game teaches you the mechanics as you play through it, which is awesome!
I really liked the platforming level towards the end where you controlled two ducks simultaneously. Nice work!