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
Kookaburra III a very fast sailer. Iain Murray believed her to be the syndicates fastest right up until the defender finals, when "Kookaburra III" finally became faster as a result of a keel modification. The defender series was extremely competitive, with "Kookaburra II", "Kookaburra III" and "Australia IV" all very close in boat speed. This led to extremely close racing, marred only by the large number of protests raised. The red protest flag was a frequent flyer from the stern of a defender boat, with the results of the day's sailing protested nearly every other race. In all, fifty protests were lodged