Question

how did the birds hear
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Answer 1

Birds do have ears, but not in the conventional sense. Like humans, they are equipped with an outer ear, middle ear and an inner ear. ... Instead, they have funnel-shaped ear openings located on both sides of their heads that are usually positioned just behind and slightly below the eyes, according to BirdNote.

Answer 2

Hearing is birds' second most important sense, and their ears are funnel-shaped to focus sound. The ears are located slightly behind and below the eyes, and on most birds they are covered with soft feathers called auriculars for protection.

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