The auriculars extend back and down from the eye and serve to protect the ears while also cutting down on wind noise.
From Ornithology #7 How do bird’s hear?
Page #4 on the top

The auriculars extend back and down from the eye and serve to protect the ears while also cutting down on wind noise.
From Ornithology #7 How do bird’s hear?
Page #4 on the top
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