Sony Alpha a9 II 24.2 Megapixel Mirrorless Camera Body Only

I recieved my A9ii on Nov 7th and have had a chance to use it for photographing birds in flight as well as a wedding. For reference, I had owned an A7r2 and currently own an A7r3. I had been wanting an A9 as the A7r3 takes spectacular portrait & landscape pictures, but is rather hit or miss when your subject is moving. The reviews of the Ergonomic improvements on the new A7r4 sounded very positive, so when the A9ii was announced & would be using those same improvements, I decided to purchase it. It was immediately obvious the A7r3 and A9ii are both excellent tools, but for two totally different functions, one for resolution, the other for speed of acquiring and maintaining focus while delivering 20 pictures per second, albeit at 24 MP. And yes, all those ergonomic improvements ( larger grip, button size & travel in particular) are just better in all respects from the A7r3 or previous. I have no hands on experience with either the original A9 or the A7r4. The electronic shutter, when set at 20FPS (there is a medium & low setting available as well) is something you must experience to believe. Coupled with the no blackout view finder, capturing birds in flight is as simple as if using a video camera. The Real Time Tracking locks on to your target and just doesn't let go. I'm including some pictures that demonstrates just that. The 1st picture of the two American White Ibis has focus locked on the lead bird. Pictures 2, 3 & 4 are consecutive shots where the A9ii clearly stays focused on the lead Ibis, even as the trailing Ibis almost totally eclipses it. The lens for these pictures was the Sony 70-200mm GM set at f3.2 and 200mm. The A9ii was set at 1/2000 and ISO 100.