Bird News | Bird Book | Bird Care | Home
State of the Nations' Birds
Dictionary | Encyclopaedia | Search | Visitor Information

 

Evolution

Development of the living organism through gradual changes in its characteristics by mutation over long periods of time. Thus one species may evolve into two or more different species, any of which and/or the original species, may become extinct. Evolution proceeds by means of natural selection and adaptive radiation.

Search Bird Dictionary

From Peter Weaver's Birdwatcher's Dictionary
Copyright © 1981 by Peter Weaver


Bird News | Bird Book | Bird Care | Home
State of the Nations' Birds
Dictionary | Encyclopaedia | Search | Visitor Information | Mail to Bird On!
Sponsored by Jacobi Jayne & Company