Hello James (I'm guessing here),
The limitations of a 1 2/3 sensor are well known, and as I said in my first part on this camera it seems it was designed to produce acceptable results for sharing on social media rather than a flexible tool for enthusiasts.
I was prompted to write this series of posts because as you can see from their sample photos, the reviewers were either not taking the camera seriously, or were simply inexperienced or, forgive the unkindness, unskilled.
Unfortunately, the Sony RX10M4 is not a value proposition in Australia, you can buy a D3400 and a 200-500, or Tamron/ Sigma 600mm for considerably less, or a Sony A7 with $900 towards a lens for the same price. I have no problem carrying 3 camera and a few lenses in the bush, so my second camera being a P900 or P1000 is an easy decision.
Reach is everything in Australia for medium and large birds, you cannot approach these ground feeding flocking birds easily, and at 600mm you will capture many individuals and only hope to perhaps crop a unique and interesting photograph.
I hope I've demonstrated the P1000's capabilities at these extreme focal lengths, and in a future installment I'll certainly cover the 600mm range.
Kind regards,
Paul