Origin of Feathers and Flights of Birds | Zoology

In this article we will discuss about the origin of feathers and flights of birds. Origin of Feathers and Flight Feathers: Many authors are unanimous that feathers are transformed reptilian scales. Primary func­tion of feather is insulation, while flight is only secondary, which is well documented in the ratite. Flight: 1. Arboreal origin: Heilman, Osborn and Beebe hold that ancestors [...]