Night Bird is a term used to describe a variety of birds that are active at night. The most common night bird is the OWL, which is a nocturnal bird of prey with large eyes and a distinctive call. Owls are typically represented by the three letter word 'OWL'. Another type of night bird is the hootowl, which is a species of OWL that is known for its loud hooting call. Hootowls are typically represented by the seven letter word 'HOOTOWL'. Lastly, the screechowl is a species of OWL that is known for its high-pitched screeching sound. Screechowls are typically represented by the ten letter word 'SCREECHOWL'.