Professor Emeritus Roger Lederer specializes in biological sciences, teaching courses in ornithology and ecology for the past four decades. He has published more than twenty scientific publications and has six books he either wrote or coauthored.

The latest addition to his repertoire is his new book titled "Beaks, Bones & Bird Songs." Below are some facts Lederer wrote about.

• Baby mallards, while still in their egg, talk to their parents and ask them to turn the eggs so the temperature is more comfortable.
• Urban birds navigate traffic through a keen understanding of posted speed limits.