Judging by the song and how accurately nifflas couples ambiance with gameplay, I'm assuming another puzzle game, or at least a game featuring puzzles, like saira or WadF.
Since his newer games, NightSky FiNCK and Saira have graphics pretty much independent to each of them, I'd assume that there would be a similar situation..
I don't know if FiNCK was bird game or not, but if it wasn't, then this might be
Also, it sounds like a scene where the player is somewhat adapted to the game and therefore can solve whatever there is to solve..
So I can assume and hope it will be a nice length