Bill, I spent a couple of hours watching a male oriented vertically, moving debris as he was creating a nesting area a few days ago-never seen this before. 2 different females were working him while he was working.. he would occasionally just bump the female near the head if she got too close, just a tap and she would move away.
I spent an hour and a half too long watching that but a flat spot turned into a fairly large dish in that 2 hrs..
Would it help the SMB if the humans helped make the dish? (I was thinking a brief squirt with the water nozzle on bottom.)
Or, does the male "doing the work" to make the dish, indicate to the females that he is worthy, and he therefore attracts a breeding mate?