Displaying items by tag: feathers
Sunday, 05 April 2015 17:48
Feathers
Feathers are skin growths (similar in idea to human skin hair) that form the outer covering (plumage) on birds. Feathers are made from a protein called keratin. There are normally two layers of feathers, namely the upper layer that is for protection and an under layer used to keep the bird warm.
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Non-woven materials