The term 'Wetland Wader' refers to a type of bird known as an EGRET, which is a 5 letter word. Egrets are a type of heron that live in wetlands and shallow waters, and they are known for their long legs and necks which allow them to wade through the water in search of food. They have white feathers and long beaks, and they are often seen standing in shallow water or perched on branches near the water's edge.