The Black-crowned Night Heron (in Eurasia, often just Night Heron; in North America, Black-crowned Night-Heron with a second hyphen), (Nycticorax nycticorax) is a medium-sized heron.-------------These birds stand still at the water's edge and wait to ambush prey, mainly at night. They primarily eat small fish, crustaceans, frogs, aquatic insects, and small mammals. During the day they rest in trees or bushes. The New World race is more gregarious outside the breeding season than the nominate race. They are often found nesting or roosting within cities in avenue trees on busy roads.--------------The scientific name, Nycticorax, means "night raven", and refers to this species' nocturnal habits and harsh crow-like call. In the Falkland Islands, they are known as "quarks" which is an onomatopoeic term.