These two were keeping close company on the North Basin waters, taking to the air and then diving together. The one on the left is an adult not geared up for breeding; if it were breeding, its head would be bright white and yellow and its neck would be dark. The other is a juvenile, two or at most three years old. At this moment clouds blocked the sun. A bit later it cleared and the morning light lit up the youngster’s flexible pouch, see below. Note also the hook at the tip of the upper mandible, very handy for persuading slippery fish to get and stay in the pouch.