Thứ Tư, 6 tháng 5, 2020

NPR News: Do Those Birds Sound Louder To You? An Ornithologist Says You're Just Hearing Things

Do Those Birds Sound Louder To You? An Ornithologist Says You're Just Hearing Things
Think of how it works in a noisy bar: people raise their voices to be heard. Same for birds. With less background noise outside these days, it's likely that birds are actually singing more quietly.

Đọc thêm tại NPR
at May 6, 2020 at 04:04PM
Health & Science

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