Jeff Stanfield & Andy Shaver are joined by Dr. Philip Lavretsky, who is a professor at the University of Texas at El Paso. They discuss the pintail decline and the northern expansion of the Mexican Tree duck, what forced male ducks manifest bright colors, human impact on where waterfowl migrate, and what the first duck might have looked like millions of years ago.
Episode #726: Nick Andrews
Episode #725: Dr. Mark Brockman
Episode #724: John Hill
Episode #723: Lewis Henderson
Episode #722: World on Fire pt. 4
Episode #721: Macy Watkins
Episode #720: Gary Christian
Episode #719: Jimbo Robinson
Episode #718: Marc Vital & Taylor Grieger
Episode #717: Gage Porter
Episode #716: Ward Hegeler
Episode #715: Kyle Barefield
Episode #714: World on Fire pt.3
Episode #713: Wade Skeen
Episode #712: Dr. Don Lee
Episode #711: Dirty Duck Coffee - Buck Heath & Jay Peterson
Episode #710: Seth Jahn
Episode #709: Wayne Hutchinson
Episode #708: Dr. Philip Lavretsky
Episode #707: Blake Poppe
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