[At that response, Winston gives a sigh that seems to say "yeah, that just about adds up" shortly before silently scooping something from the darkened corner into one hand. He shifts on his knees to face Venkman again- presenting a small palmful of cracked eggshell fragments to his partner.]

Somehow... I get the feeling these remains of an egg have a little something to do with how our new roomie managed to show up out of the blue.