THAT'S LIFE SCIENCE
'(<a href="http://www.j-archive.com/media/2011-06-13_DJ_18.jpg" target="_blank">Jimmy of the Clue Crew shows a bird on the monitor.</a>)  A bird's wing is composed of <a href="http://www.j-archive.com/media/2011-06-13_DJ_18a.jpg" target="_blank">bones</a> similar to our arm; & like us, birds have two bones between their elbow & wrist with these names'
the ulna & the radius