Uploaded June 2014 | Updated September 2026, 59 minutes ago

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Feathers have long been recognized as a classic example of efficient water-shedding— as in the well-known expression "like water off a duck's back." A combination of modeling and laboratory tests has now determined how both chemistry and the microstructure of feathers allow birds to stay dry even after emerging from amazingly deep dives.

Source: MIT

Read more: laboratoryequipment.com/videos/2014/06/feather-shape-chemistry-keep-diving-birds-dry