The color blue is commonly found in nature. Many varieties of birds found in our own backyards exhibit a shade of blue. While some colors in plumage are the result of a pigment, the blue in feathers is due to their structure. Light refracts off of the feather proteins and we see it as blue. […] …
Big Stretch
Keito, female Blue Headed Pionus.
BBC News: Pterosaurs: Fur flies over feathery fossils
Pterosaurs: Fur flies over feathery fossils - http://www.bbc.co.uk/news/science-environment-46572782
BBC News: Archaeopteryx: The day the fossil feathers flew
Archaeopteryx: The day the fossil feathers flew - http://www.bbc.co.uk/news/science-environment-45967655
The Northern Herper 