Nests of the Double-crested Cormorant along the Snake River in May. The adults are shy and leave the nests when approached at a distance. They range from Alaska to Florida and Mexico. The name derives from a small double crest of white feathers that develop in breeding season. They mainly eat fish and hunt them by swimming and diving. The feathers are not waterproof; they must spend time drying them out after being in the water. Photo by Mal Furniss of Moscow.