Question

birds excits in form of what ?​

Answer 1

Answer:

xpp-vcsw-zrs

good purpose

Explanation:

Answer 2

Explanation:

the scales of reptiles, and those on the feet of birds, feathers are made of keratin, a fibrous protein also found in hair. ... Contour feathers form most of the surface of the bird, streamlining it for flight and often waterproofing it.