Editing Exaptation (section)

==Adaptation and exaptation cycle==
It was speculated by Gould and Vrba<ref>[http://www2.hawaii.edu/~khayes/Journal_Club/fall2006/Gould_&_Vrb_1982_Paleobio.pdf Exaptation - A Missing Term in the Science of Form]</ref> in one of the first papers written about exaptation, that when an exaptation arises, it may not be perfectly suited for its new role and may therefore evolve new adaptations to promote its use in a better manner. In other words, the beginning of evolving a particular trait starts out with a primary adaptation toward a fit or specific role, followed by a primary exaptation (a new role is derived using the existing feature but may not be perfect for it), which in turn leads to the evolution of a secondary adaptation (the feature is improved by natural selection for better performance), promoting further evolution of an exaptation, and so forth.

Once again, feathers are an important example, in that they may have first been adapted for thermoregulation and with time became useful for catching insects, and therefore served as a new feature for another benefit. For instance, large contour feathers with specific arrangements arose as an adaptation for catching insects more successfully, which eventually led to flight, since the larger feathers served better for that purpose.