Hedwig.  She would look great in a Christmas Tree.

Updated with flat bottom (12/3/2023) thanks Challapenjo - removed old files.

Origional Low Poly: "Low Poly Snowy Owl Figurine 3D Scanned" (https://skfb.ly/IFuQ) by iontrades is licensed under CC Attribution-NonCommercial-ShareAlike (http://creativecommons.org/licenses/by-nc-sa/4.0/).

This is a good example of how you can take a very low poly blocky base mesh and make it look real in Blender with just a few modifiers and some sculpting. Check out the link to the original.