A new book from a Minnesota-based wildlife specialist tells the story of bird history and conservation in North America. It's called "Oology and Ralph's Talking Eggs."
The author is Carrol Henderson, who works for the Minnesota Department of Natural Resources. Henderson writes in the book about new discoveries that have come from researching a collection of about 4,000 bird eggs gathered by an Iowa farmer named Ralph Handsaker.
MPR's Cathy Wurzer spoke with author Carrol Henderson.