The Family Anhimidae, commonly referred to as the Screamers, is a group of large, waterfowl birds found in South America. These birds are notable for their loud, piercing calls that can be heard from miles away. While the scientific name for this family is Anhimidae, there are several other terms that can be used to refer to these fascinating birds. Some synonyms for Anhimidae include the horned screamers, the crested screamers, and the chajá. Whether you call them by their scientific name or one of their more colloquial designations, the Screamers are a unique and awe-inspiring group of birds that are well worth learning more about.