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Ancient hidden pattern discovered on bird's feathers by scientists
Surprisingly, all flying birds, ranging from hummingbirds to eagles, possess a consistent feature: 9 to 11 asymmetrical flight feathers known as primaries. This common trait among diverse flying ...
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Scientists Discover an Ancient Pattern Hidden in The Feathers of Birds
From the tiniest hummingbird to the fiercest eagle, all flying birds had 9 to 11 asymmetrical flight feathers called ...