I listened to a fascinating report by Charles Osgood on his “The Osgood File” this week. Researchers at Lund University (Sweden) have been studying the flight patterns of the common swift, that black ubiquitous bird (about the size of a barn swallow) found across Europe and the United Kingdom.

Read more at the source: The Common Swift’s Uncommon Lesson

Article excerpt posted on en.intercer.net from The Fourth Watch.