What are you looking at? fotoska / Getty
It’s difficult to focus your gaze on an object when your eyes are on opposite sides of your head. When European starlings want to focus their gaze, they do so in a unique way: rapidly bobbing their heads from side to side so both eyes get a look.
We humans have our eyes on the front of our heads, so their fields of vision overlap, but most birds have theirs on the sides. Scientists have proposed three ways they might focus on an object: use…
