On the contrary, there is a considerable body of evidence that these fossil traces, known as 'dino-fuzz', have nothing to do with bird feathers... I, and many others, do not find any credible evidence that those structures represent protofeathers.
Oh, nature's noblest gift, my grey goose quill, Slave of my thoughts, obedient to my will, Torn from the parent bird to form a pen, That mighty instrument of little men.
When you have shot one bird flying you have shot all birds flying. They are all different and they fly in different ways but the sensation is the same and the last one is as good as the first.
What has been done in the world - the works of genius - cost nothing. There is no painful effort, but it is the spontaneous flowing of the thought. Shakespeare made his Hamlet as a bird weaves its nest.