As she lifts him off the ground, one hand hovering beneath him just in case, Daine raises her eyebrows in surprise. Look at him, all interested in learning!

"You squeak," she explains, already looking around for a nice, simple object for him to try and detect, "and then listen for the echoes. It'll form a sort of picture in your mind."

There are other shrubs around, but those are a bit complex. It'd be better to try it out on a rock, or a post, or something else uncomplicated. Spying a large boulder that'll do nicely, she heads over, being careful not to jostle Peter. "Here, you can try it out on this rock." Stopping about ten feet away, she sits down in the grass and draws her legs up before gently depositing Peter on one knee, facing the boulder.

"Close your eyes," she advises. "Then squeak at it."