The lens is definitely nice to have in the bag, Steve. I expect it to be a most helpful complement to the RF 100-500mm next year in the field.
Speaking of first firsts. I had a first this year too, a Northern shoveler. And in fact it was a lifer as I'd never even seen the bird before. Although it's definitely not rare here. I'm just a bad bird spotter, is all. Which is not handy if you like to photograph birds. Anyway, my two favourite shots of him. He was in the water and took off and flew right at me and past me so I had a bit of luck there.