This enormous heron stands 1.5 meters tall with a robust dagger-like bill. Immature is similar to adult, but has rustier upperwings. It has a ponderous and labored flight pattern. Inhabits large rivers, marshes, estuaries and mangroves hunting for large fish and other animals, stabbing them with an open beak. It has a distinct “kowoork” barking call that can be heard from up to 2 km away. Purple Heron has similar plumage, but Goliath Heron is significantly larger, has a much larger bill, and has a rufous (not blackish) top of the head.