This is a really beautiful painting. The owl is striking because of your colour choices, your paint application and the infusion of expression into it.
Your colour choices are excellent because the blue greys and blacks contrast well with the bright orange and the brown tones. The darks and lights are in all the right places.
I really like the contrast between thick paint application and watery spills and thinner pain spreading. The thick bits of paint are used carefully to illustrate the texture of the feathers and it's very effective. Meanwhile the softer, thinner, more watery painted surface gives atmosphere to the blank space.
Some may take complaint with the fact that there is little definition between the owl and the background, but I like that it is difficult to tell where the owl ends and the background begins. This makes it interesting to look at instead of obvious and boring to look at.
I like that it appears as though much of the paint was mixed and blended on the surface of the painting.
The painting also makes use of the technical element 'rule of thirds' where the owl is positioned to the left of the picture plain. This makes it more visually appealing than if this technique weren't employed.
I like that the composition includes a hint of the owl's ears. It ads character and visual appeal.
It's expression is a little mean but quirky at the same time. It reminds me of the owl from Bambi as he explains the concept of being 'Twitterpated' to the other animals.
Great work, I hope to see more as interesting as this piece.