You may call a jay a bird. Well, so he is, in a measure--because he's got feathers on him, and don't belong to no church, perhaps;but otherwise he is just as much a human as you be. And I'll tell you for why. A jay's gifts and instincts, and feelings, and interests, cover the whole ground. A jay hasn't got any more principle than a Congressman.
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.
The caged bird sings with a fearful trill, of things unknown, but longed for still, and his tune is heard on the distant hill, for the caged bird sings of freedom.
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.