File:Dromornis BW.jpg

Summary
Dromornis stirtoni, a flightless bird from the Late Miocene of Australia, pencil drawing. , also referred to as thunder birds or demon ducks, were a clade of large, flightess Australian birds of the Oligoscene throught Pleistocene epochs.


 * Source: https://commons.wikimedia.org/wiki/File:Dromornis_BW.jpg
 * Author: Nobu Tamura
 * License: CC BY-SA 3.0