As if birders aren't hard enough to identify, we also need to be aware of the optical illusions that can throw us our perceptions of size, color, distance, or even if what we are looking at is even a bird! This video attempts to break down the common illusions you should be aware of.

0:00 Intro
0:32 Moon Illusion
1:16 Emmert's Law
2:46 Ebbinghaus Illusion (typo in video)
4:01 Delboeuf Illusion
4:55 Irradiation Illusion
6:46 Pareidolia