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
Fauna of the Australian Capital Territory red belly. Three other species of snake are occasionly found in the ACT: the Australian copperhead, tiger snake and death adder. Lizards in the ACT include the bearded dragon, mountain dragon, and the blue-tongue. The water dragon can grow up to a metre in length. The eastern stone gecko is found under rocks in the highlands. Goannas are rare, as are the striped legless lizard in tussocky grassland, the pink-tailed worm-lizard, and the grassland earless dragon. At least 290 species of birds have been recorded by the Canberra Ornithologists Group. The gang-gang cockatoo is the bird emblem of the ACT.