Thanks everyone. Owls are special birds and getting opportunities to view them up close and photograph them is probably my favorite part of photography.
Thanks Alex. Unfortunately while on a family vacation in Spain I had my car broken into and all of my gear stolen. All of it. If you follow Arties blog I am the mod who didn't have a back up and lost all my shots. 1dx2, 600 f4 ii, 100-400 ii, extenders, flash, cfast cards, batteries, etc all gone. I was fully insured so not the end of the world, but still a bummer. Worst part was losing all of my photos from the trip including some full frame Lammergeier shots

Now the real issue is do I switch to Nikon or be cameraless for a while and wait for delivery of the new Canon 600 f4 iii. Lots of decisions...