Hey Stuart,
this is where they like to perch.....when you can see them.....so nicely done to get him in the open! Even though I generally like tight comps.....would like a touch more room on the bottom as it looks like the leg was clipped. I would tone down the brighter grass? near the legs (running on diagonal). Did you boost the contrast a lot? Light looks good so maybe pull back a bit? We'll see what others chime in.
Man o man, would I love to see one of these guys as cleanly as this. Super pose and head angle. Light looks pretty bright, so maybe a touch of contrast reduction would help, and I second Roman's thoughts about some more room around him. Very well seen and captured.