Brian. my points are very much along Jons original points. As I said, I'm having to second guess with my thoughts here, not knowing your workflow etc.
It has a slight 'texture' to it like noise but its not and if you have darkened it then I might just go with Exp nothing more, or personally leave it off, I don't think it adds.
What I'm seeing Brian is a 'contrasty' image with no real fine detail either in the primary or chest plumage and if the sun was out then it may impact creating stronger darks????????
Great if you are and also applying where the masks can either added or subtracted from areas too, good that you are. Plain backdrops can look a bit two dimensional I feel in a single colour, and often where DN had been applied it can look, as Artie would say, a bit plastic. Its nice occasionally to see a small amount of granular in a background as it gives authenticity and if ever print I would be very surprise if you ever saw it in the print.
Yes, both are on the same plane of focus, but how far were you to the subject. I'm just asking and making a suggestion nothing more Brian, but you could leave the F-stop & SS at a fixed amount ie f/5.6 and SS 1/2000 and dial the ISO up or down according to the Histogram in the EVF????
Brian whatever works for you, its just something in that WF I just can't pinpoint and its frustrating because you get some awesome captures, with great kit, but there is something IMHO....
Fine, I just wondered if you Exported from Lr and you had any Output sharpening applied in the Output, then used Ps to sharpen that might be compounding things?????
Brian, they are just thoughts that's all.