Are those moving?

Weird post today. Did you ever notice on a windy day, if you are close to a tree, you can see it moving in the wind? Sure you did.

Alright, got that situated. But on that windy day, did you notice you can't tell if trees are moving in the distance? It's like it's not even windy a half mile away. They look like they're standing still.

Weird phenomenon!