Black-headed Grosbeak

I constructed a new small bathing area as an upper level for the pond at my permanent blind and got it going a few days ago.  This was the second bird using it that I had in front of my camera.  It actually perched pretty much where I wanted it, though it did point out a shortcoming in my design/execution as evidenced by the oof patch of moss in the lower left.  I built it as a rectangle, and a fan shape would have reduced the likelihood of that problem.

7D2, Sigma 150-600 C @ 388 mm, tripod with ball head and Sidekick, f/8, 1/800, iso 800, aperture priority, pattern metering, -1 EV.  Processed in LR & PS CC.  Cropped to 10.1 MP.  Taken on July 1st at 8:44 am.

Your comments and critiques are greatly appreciated.

Thanks,