Feathers
For such simple things, feathers have an amazing amount of science built in.
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This is so cool!!
This is so cool, I never knew that about feathers!
always wondered about the birds colours
always wondered about the birds colours
hi
i could not watch the viedeo because it said it was for members only and i am a member but my freinds said this video was cool
Try again. I found the
Try again. I found the problem and corrected it.
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