This is lovely. Perfect pose, and the snow and nice perch contribute greatly. Only thing I might consider is a very slight darkening of the pupil. Well captured.
John this is really a beautiful photo. Great pose, perch and details. When you don't have the warm tones of warm sunlight then the photos always look a bit thin. You have to account for that in post. The blues of Blue Jays are deeper and darker and a minor adjustment of the black and gray point will really make the bird come to life. Also I would tone down the whitest whites of the undertail coverts and the secondaries.