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Name: Birds
ID: m44694
Language: English (en)
Summary: By the end of this section, you will be able to:
  • Describe the evolutionary history of birds
  • Describe the derived characteristics in birds that facilitate flight
Subject: Science and Technology
Keywords: Archaeopteryx, bird, bird evolution, contour feather, down feather, Enantiornithes, flight feather, furcula, Neognathae, neornith, Paleognathae, pneumatic bone, primary feather, secondary feather, therapod, Vertebrata, vertebrate, vertebrates, veterinarian
License: Creative Commons Attribution License CC-BY 3.0

Authors: OpenStax College (
Copyright Holders: Rice University (
Maintainers: OpenStax College (, Cnx Biology (

Latest version: 1.4 (history)
First publication date: Aug 23, 2012 2:51 pm +0000
Last revision to module: Apr 10, 2013 3:36 pm +0000


PDF: m44694_1.4.pdf PDF file, for viewing content offline and printing. Learn more.
XML: m44694_1.4.cnxml XML that defines the structure and contents of the module, minus any included media files. Can be reimported in the editing interface. Learn more.

Version History

Version: 1.4 Apr 10, 2013 3:36 pm +0000 by Cnx Biology
Review Questions

Version: 1.3 Apr 9, 2013 12:03 am +0000 by Cnx Biology
review change

Version: 1.2 Mar 5, 2013 1:28 pm +0000 by Cnx Biology
migration spreadsheet changes

Version: 1.1 Aug 30, 2012 11:08 am +0000 by Cnx Biology
Created module

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