We also saw numerous still, or almost still hot pools. Some were springs, and some were "resting" geysers. I'm not sure which these two were.
The colors and clarity of the water was amazing.
Not far into the park, our first Yellowstone bison came ambling down the road. He sure was big, and very fat and healthy looking. We were afraid he might fall asleep while walking down the road.
He just ignored our car. Except for a quick glimpse of a herd some distance away on our drive out, this was the only one we saw. Betty told us they are mostly in another part of the park at this time of the year. I'm sure we'll see many more.
The only other wildlife we spotted were two marmots on the hillside behind Grand Geyser. We just have to keep our eyes open. We do plan on taking some hikes into areas where there aren't quite as many people, and expect more sightings there.
Speaking of people, it wasn't as crowded as I expected. Some parking lots were jammed full, but others had spaces open. The other people waiting for the geyser eruption were pleasant and also there to enjoy the park.
A very nice day indeed.