<p>Warren Hansen has spent three years venturing to remote corners of the McDonald Creek watershed in Glacier National Park to monitor its thriving population of migratory harlequin ducks.</p>
October 26, 2013
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October 26, 2013 5 a.m.
Troubled water
Polson native studies harlequin ducks' sensitivity to changing stream flows, human disturbance
GLACIER NATIONAL PARK — With their signature plumage rivaled only by the beauty of their migratory mountain homes, it’s easy to see why harlequin ducks have captured the hearts of countless birdwatchers and casual observers, alike.