We got a little delayed at the trailhead by a grazing bison.
The Tour Director being (more or less) patient:
He finally moved across the road.
The first third of the trail crosses a swampy area, enters the forest, and then begins skirting the lake. Needless to say, you're watching for bears.
A little secret: the Tour Director, in the throes of animal hunger, doubles as a chipmunk whisperer.