Natural Selections: Warblers

An astonishing variety of warblers return with the northern spring from tropical climes. Some cross the Gulf of Mexico without a rest stop. Martha Foley asks Dr. Curt Stager, why? What do we have here that can't be found in Mexico or Martinique?

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Adirondack News Fund Founding Supporters: Paul Smith's College, The College of the Adirondacks · Wildlife Conservation Society · Adirondack Medical Center Foundation · Adirondack Museum · Niagara Mohawk Foundation · Schumann Foundation · John A. Sellon Charitable Trust · several anonymous individual donors