Throughout our winter visit to Waterton Lakes National Park, two American Dipper were present along Red Rock Creek where it crosses Highway 5. There was convenient parking at the Pass Creek Winter Campground, so we pulled over and I sat by the water and waited for the dippers to approach. When one finally did, the sun had set below the mountains to the south - so lighting was not optimal. Setting the exposure for a dark bird against a bright background was tricky.

Further complicating the situation, a couple fellows in a truck arrived and flew a drone out right over my head, agitating the bird. While I try not to be a petty person, I did derive some satisfaction from the abrupt cessation of the drone's whine, followed by a thud and much swearing. The operators trashed the drone by flying it into a tree.

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Make:	Canon
Model:	Canon EOS 5D Mark IV
Exposure:	0.002 sec (1/640)
Aperture:	f/5.6
ISO Speed:	2500
Focal Length:	800 mm
Lens:	EF800mm f/5.6L IS USM