Kookaburra larger group known as "kingfishers", kookaburras are not closely associated with water. The genus "Dacelo" was introduced by the English zoologist William Elford Leach in 1815. The type species is the laughing kookaburra. The name "Dacelo" is an anagram of "Alcedo", the Latin word for a kingfisher. A molecular study published in 2017 found that the genus "Dacelo", as currently defined, is paraphyletic. The shovel-billed kookaburra in the monotypic genus "Clytoceyx" sits within "Dacelo". Four species of kookaburra can be found in Australia, New Guinea, and the Aru Islands. Kookaburras are sexually dimorphic. This is noticeable in the blue-winged and
Rufous-bellied kookaburra Rufous-bellied kookaburra The rufous-bellied kookaburra ("Dacelo gaudichaud"), originally known as Gaudichaud’s kookaburra after the French botanist Charles Gaudichaud-Beaupré, is a species of kookaburra which is widely distributed through the forests of lowland New Guinea. It has also been recorded on Saibai Island, Queensland, Australia. It has a black cap, blue-tinged wings, and a pale rufous belly and tail feathers, but its white bill distinguishes it very clearly from other kookaburras with their black bills. Juveniles, however, have a dark grey bill. Like the blue-winged kookaburra, the sexes can be distinguished by the colour of the tail feathers: blue in males