I'm back from Africa and just starting to go through tons of images including this one of a fish eagle who had just stolen a meal from a nearby crocodile. I have just posted a blog PLEASE CLICK HERE where I discuss how good the new Sony Real-Time Tracking AF is. I've been shooting sports and wildlife for 40+ years and have never experienced anything like this.

Sony a9, Sony 100-400mm + 1.4x converter (560mm), f/8, 1/1000th, ISO 1000