I saw some very beautiful birds at Mingus Park. I especially love the Cayuga and Cayuga-hybrid ducks! Cayuga ducks are characterized by a black bill and black plumage which is an iridescent beetle green in the correct light and I have seen one of those at the park. Hybrids usually have mottled or yellow/black bills and yellow/orange feet as this one has. The Mute Swan isn't really mute...it will hissssss at you if you get too close without food! I wish the water in the pond wasn't so dirty so the swan's head and neck was white instead of gray.