Mom went directly to exactly the same patch of grass where she went last time. Last time, I thought (probably wrongly) that she was licking water from the grass. This time, it was clear that you all were right that she was eating the grass. It must be tasty!
Suddenly, mom was alert to something beyond our view. The bigger kitten seemed to have heard it earlier than she did, and he had sprinted away.
It turned out to be something MUCH bigger than them - a moose! The bobcats acted very scared and disappeared in a hurry.
Check out the video of the bobcat family if you have time!