Canon R3, R5, or R7 for fast, challenging birds in flight photography?

Photographing fast, challenging birds in flight? Which Canon camera body? The Canon R3? The Canon R5? How about the Canon R7? In this video I go over Auto focus and ISO performance and also take a look at overall image quality including rolling shutter in determining which camera body I like best for fast birds in flight. 00:00 - Start 01:32 - Introduction 04:16 - Auto Focus Performance 08:46 - Image Quality 15:04 - Rolling shutter issues 19:28 - The Verdict Speed-shooter harness system: https://www.whistlingwingsphotography.com/speed-shooter-harness Kingfisher images from all 3 camera bodies: https://ronaldbielefeld.smugmug.com/Belted-Kingfishers-2022-2023/