10 Must-Use Bird Photography Camera Settings for Beginners
https://digital-photography-school.com/10-must-use-bird-photography-camera-settings-beginners/
Instead of setting the ISO to be at 400 or 800, it’s wise to set it to Auto ISO and select the maximum sensitivity to be 800. If you are using a full-frame camera (like Canon 1DX, 5DMark3, Nikon D4, D810, etc.), you can set the maximum sensitivity to ISO 1600 (or even 3200 depending on noise levels). Auto ISO settings for Canon DSLRs:
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