Another shot of the Little owl in peak breeding season ,just need him to land here a little later in the evening ,plus I have included photoshop in my editing were I previously used lightroom.canon 500mm f4 iso 800 1/332 sec on a tripod
I think the light is very nice.
I think this would look great as a vertical if you have the pixels.
I really like the raised feather and the reflection of the sun/sky in the eye.
The lichens are a nice element of the perch.
What camera are you using? If it is the 1 DX or !DMKIII I would easily bumped up the ISO to 1600 and go for a bit more DOF.
Another thought to improve this very nice image would be to desaturate the green of the BG slightly.
Gail