Thank you all for the kind comments. I planned this trip way ahead and the only thing I did was photograph these owls. I did shoot some snow buntings but no editing of them yet. I used a Sony A1-II and the 200-600 lens exclusively. Processed in Photoshop.
Since I don't know the area at all, I had a guide to make more efficient use of my time there (3.5 days) and to help locate and gain access to them. We mainly worked the area west of Barrie and a little south of Stayner. I won't provide exact locations for ethical reasons. My days there were the coldest yet of the year, ranging from around -10F in the early light to single digits above zero mid day, then dropping again for the late light session. I had plenty of good warm clothing but I needed to use a thinner glove on my right hand to operate the camera. That yielded painful numbness within ten minutes. I missed a few launch/flyby sequences because I couldn't tell that my finger was not on the shutter when I tried to press it. I had to look at my finger to make sure it was over the button and then just press down with no sensation. It was like using a stick to make the images! The pain is now gone but the images remain. Worth it!