That 'duck' is a very large Canada Goose carving - probably bigger than real life - 25" long by 10" high. I have it there to hide the power cord in the black plastic conduit until I can hide it behind the baseboard.

The M2s are in the alcove & placed there mostly for aesthetics as there is just no other way. They are about 11' apart & are toed in slightly - the outside angled speaker side parallels the short wall. I get great imaging inside the alcove & often it even extends outside the confines of that space.

I'm not worried about it as it sounds just fine to me...