Herons and Egrets are among the most majestic of all birds. The are very similar birds. Some use the term egret and heron interchangeably, although they are distinct birds. Depending on the species these birds can be a short as 16 inches and as tall as 7 feet and taller. The grey heron can have a wing span up to 6-1/2 feet. Both herons and egrets are long-legged, freshwater birds that are plentiful along coastal areas, rivers, lakes, ponds and swamps. They prey on fish, reptiles, insects, crustaceans and other small birds.