A new platypus mystery β¦ hollow hairs like bird feathers!
The platypus keeps amazing scientists: even its hair hides a strange secret that, until now, only birds were known to have. The post A new platypus mystery β¦ hollow hairs like bird feathers! first appeared on EarthSky.
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earthsky.org/earth/platypus-mystery-hairlike-bird-feathers/
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