It's a heron. Hey! I solved the Houseboat Mystery! No wonder Mark Trail is looking on in seething jealousy. I'm more concerned with how freakishly tall Henry is on this cover. It seems to me that if he stood up, he'd be taller than the door into the houseboat. Though it is a tiny houseboat. More of a studioapartmentboat. Cutting down on size must keep it very lightweight, though. Even with the added mass of Giant Henry and Ordinary Violet (and probably the other two inside), it is still able to easily move through water shallow enough for a Heron to stand in.