I think I read somewheres that you need 240Hz monitor to reach flicker-fusion with parrots?
It was either 120Hz or 240Hz.
I lost flicker-fusion one time in a movie theatre when an onscreen character pulled a knife, & suddenly the screen was AVALANCHING my mind with discrete-frames, & they were jumping around ( my eyes were jumping-around, but my perspective, within my brain, had been jarred ). That even seemed to have lasted about 1 second.
There is some video, journalism or documentary or something, on dragonflies, and the person with the knowledge was saying…
~ we know how long it takes for each layer in a brain ( neural-network ) to process its layer’s stuff, and we know from the short reaction-time of dragonflies that they’re using 3-neurons-deep brain for navigating/hunting/reacting.
We don’t know how. ~
I seem to remember that neural-signal in our biology runs at about … 300km/h?
Something like that.
So, with all the circuitry being shorter in an always-smaller kind of animal, it may have a predictably-shorter flicker-fusion rate?
( within kind, so no extrapolating from humans to birds, e.g. )