The term 'Wetland Denizen' refers to an animal that lives in a wetland habitat. The crossword solution for this term is 'EGRET, ' which is a type of wading bird with long legs and a long neck. Egrets are found in wetlands around the world, where they feed on fish, frogs, and other small aquatic animals. They are also known for their beautiful white plumage, which is often used in fashion and art.