Hm. I've been half-convinced the butterflies drop them as a lure.

[This as he stashes the jar lid in a pocket and moves a few steps away, so they aren't waving jars around in each other's faces.]

You know, to drop an ounce of hope that makes someone more inclined to stay and have a look around; I could be wrong, though. It could be coincidence.

[He holds the jar out in front of himself, moving it minutely to catch orbs as they descend in slow motion.]

Sorry, you said something about seeds. I don't know anything about plants; is this really a thing?