Christmas boobook species are on-going. Christmas boobook The Christmas boobook ("Ninox natalis"), also known more specifically as the Christmas Island hawk-owl, is a species of owl in the family Strigidae. Closely related to the hawk owls of Southeast Asia and Australia. "N. natalis" was first classified at species level by J.J.Lister in 1888. It was not until 1998 however that DNA testing confirmed its status as a separate species from other owls. "N. natalis" is endemic to Christmas Island, a small Australian territory of about 135 square km situated in the Indian Ocean approximately 360 km south of Java. The flora and
Australasian wren from such pairings. Males of several species pluck petals of conspicuous colours and display them to females for reasons unknown. The song of fairywrens is pleasant and complex, and at least two species (superb and splendid) possess, in addition to the alarm calls common to – and universally understood by – most small birds, another vocalization used when confronted by predators. This, termed "Type II Vocalization," is song-like and used when confronted by calling butcherbirds, and sometimes other predatory birds. Its purpose is, however, unknown; it does not seem to be a warning call. Australasian wren The Australasian wrens are