I'm no expert. The purpose is to start a discussion that enlightens young waterfowlers about how well birds can see.
Much of what I'll post is anecdotal. Not a lot of science.
Off topic already. I clocked a Canada goose at close to 70 mph near Arcola, IL last week.
Was flying with the wind.
In order for birds to see well and not run into things I'd surmise that they see and process the info much much faster than we do because we do not fly.
I've observed mallards decoying in the moonlight they can see our decoys in the dark.
Their eyes have an extra cone and I don't fully understand it but they can detect colors that we do not see.
All this adds up to you have to hide really really well and Keep still!
I'm no expert but I think it'd benefit us all if an actual optician would contribute. My eye doctor is very cool and will talk about anything. I'll bring it up at my next exam and offer to pay him to teach me about it if he can then share.
A human eye and Brain processes at around 25 hertz.
I suspect a teal duck can see ten times faster or 250hz. (Frames per second)
They'd have to. Wood ducks too..they fly right thru branches and don't get hurt.