Science Focus - the home of BBC Science Focus Magazine
How are birds' feathers waterproofed? © Getty Images

How are birds' feathers waterproofed?

By
Subscribe to BBC Science Focus Magazine and get 6 issues for just £9.99

Birds are able to keep their plumage waxy and water-repellent even in the wettest conditions by preening tail to top.

Asked by: Oliver Lai, Port Louis

Advertisement

Birds pick up oil on their beaks, by rubbing against the uropygial or preen gland near the tail, and then rub it over their feathers. This coating insulates the interlocking barbules in the feather. As water cannot penetrate through the oil coating, the feather is waterproof.

Advertisement

Subscribe to BBC Focus magazine for fascinating new Q&As every month and follow @sciencefocusQA on Twitter for your daily dose of fun science facts.

Authors

luis villazon
Luis VillazonQ&A expert

Luis trained as a zoologist, but now works as a science and technology educator. In his spare time he builds 3D-printed robots, in the hope that he will be spared when the revolution inevitably comes.

Advertisement
Advertisement

Sponsored Deals

Subscribe to BBC Science Focus Magazine

Subscription offer

Subscribe and try your first 3 issues for just £5. After your introductory period you will pay just £22.99 every 6 issues by Direct Debit. Receive every issue delivered direct to your door with FREE UK delivery.

SUBSCRIBE NOW
Advertisement

Sponsored content

Science Focus Podcast

Listen to some of the brightest names in science and technology talk about the ideas and breakthroughs shaping our world.

LISTEN