Kagu name "Rhynochetos", and the clade name Rhynochetidae, are derived from the Greek "rhis" meaning nose and "chetos" meaning corn, referring to the corn-shaped flaps over the nostrils. The specific name "jubatus" is derived from the Latin "iabatus" meaning crested. The name kagu is derived from the Melanesian names for the species. The species is variously known as the "kavu" or "kagou" in the Kanak languages, and as the "cagou" in French (also used as an alternative spelling in English). The kagu is a ground-living bird, in length. The weight can vary considerably by individual and by season, ranging from .
Creature type (Dungeons & Dragons) is building the body; the second is a ritual requiring the casting of specific spells to bind a spirit of some kind (typically an elemental drawn from the Inner Planes) into the body and imbue it motion and special abilities. Most constructs are made of metal, but other materials — including bone and corpses—can be used. The creation methods for certain constructs are unknown, or might have much more stringent requirements. Warforged, for example, can only be created with the help of specific artifacts, the "creation forges". Golems are the best-known type of construct. Deathless are cadavers animated or empowered