More on Feathers

Here is a bit more about feathers:

See these earlier posts for more details about feathers:

http://pterosaurnet.blogspot.ca/2011/10/bird-feathers-are-analogous-to-wing.html

http://pterosaurnet.blogspot.ca/2012/02/pterosaur-brachiopatagium-to-bird.html

http://pterosaurnet.blogspot.ca/2010/05/pterosaur-wing-covering-1.html