The interesting thing about the Red-tail hawk in the video we got was that it bobbed and tilted its head a lot. It just looked really odd. So, I looked on the web to find out why it does that.
It turns out that a hawk’s eyes are fixed in its skull, so in order to stabilize its vision and get the depth perception right, it has to move its whole head. This helps it calculate the distance to its prey. We can move our eyes up and down and laterally without moving our heads.
The funny thing is, was the hawk doing this because it was looking at us?
Go Retire Psychiatrist 
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