Dr. Chris Nicolai, waterfowl scientist for Delta Waterfowl, joins Dr. Mike Brasher for an extended, in-depth discussion about the science and application of marking individual birds. In the first of 3 episodes, we discuss the early days of marking, the type of data and information gathered from it, its advantages over other methods of study, and how the technologies and techniques continue to evolve, providing increasingly detailed data on the waterfowl life cycle. www.ducks.org/DUPodcast