Hm. [Abby circles the enclosure, wishing that Numbuh Two were here. He'd have something foolproof whipped up in half the time it'd take her to jerry-rig a decent pen.]

They'll do for now. We'll need them as anchors, 'cause otherwise these critters are gonna figure out they can just push those sticks over soon. [She starts laying out her supplies and drawing a new outline for a pen in the dirt, slightly outside of the one they're already in.]