I really love this image. What a great subject! There's only a couple things I can really critique:
I would perhaps sharpen the image, especially the beak. The eyes are mostly sharp, but I would give them a little bit of a boost. Perhaps I would soften the feathers directly under the beak to match the level of blur of the feathers around them and give the appearance of the beak and eyes being sharper.
I would also give the whole image a little bit of an exposure and contrast boost as it looks just a tad underexposed.
Overall I think it's a great image and leaves quite an impact. I love the crop and the angle. I really like that the owl is looking off camera. It gives him this lovely little head tilt. The soft brown and tan color palette is very enjoyable too.