Anyone who’s ever been jolted awake by a chorus of chirping knows birds are busiest at dawn. But why they choose that early hour to be so noisy has puzzled scientists for decades. A popular theory claimed that birds sing more at dawn because their songs travel better in the still, humid morning air. Turns […]
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Anyone who’s ever been jolted awake by a chorus of chirping knows birds are busiest at dawn. But why they choose that early hour to be so noisy has puzzled scientists for decades. A popular theory claimed that birds sing more at dawn because their songs travel better in the still, humid morning air. Turns […]
