Of course. They should be out and about on sorties for a week now. Curious little critters.
They also need access to mums food (and, well, poop too), so they can start eating solids.
Either replace that bowl with something shallow where you put the nest in (or just remove the plastic thing completly, a corner is fine for the nest now, I would add a pile of hay), or make ramps outside so they can always get back in.