Juvenile black-crowned night heron (Nycticorax nycticorax) perched on a branch. This stocky heron is found throughout a large part of the world including Europe, Asia, and North and South America. Adults are usually a pale grey with black cap and back. Red eyes. Juveniles are brown and streaky with yellow eyes. They feed nocturnally for fish, frogs and other prey. Photographed in the Chobe River area of Botswana.