One possible interpretation of this quote is that feathers existed prior to the advancement of birds. This recommends that plumes had a different function prior to they were made use of for trip by birds. Some scientists think that plumes may have been used for insulation, courtship screens, or perhaps as a kind of camouflage.
One more feasible interpretation is that feathers existed in dinosaur forefathers before they evolved into birds. This is sustained by the discovery of feather-like frameworks in fossils of non-avian dinosaurs, such as the tyrannosaurid Yutyrannus and also the oviraptorosaur Anchiornis.
In general, this quote highlights the elaborate transformative history of feathers and their function in the advancement of bird trip.
"I think I was first awakened to musical exploration by Dizzy Gillespie and Bird. It was through their work that I began to learn about musical structures and the more theoretical aspects of music"
"There are joys which long to be ours. God sends ten thousands truths, which come about us like birds seeking inlet; but we are shut up to them, and so they bring us nothing, but sit and sing awhile upon the roof, and then fly away"