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
Australian Silver Kookaburra capsules. One-ounce coins ship in shrink wrap rolls of 20, with 5 rolls in each box of 100. Special editions such as proof, high relief, privy marked, colored, and gilded are often available. They are minted in the following four sizes: To commemorate the 25th anniversary of the kookaburra coin, the 2015 coin features the same image of the kookaburra as the original 1990 coin. To differentiate the 1990 and 2015 coins the date on the reverse reads 1990-2015 and 2015 has been added to the obverse. The 2015 coin had a release date of September 1, 2014. The maximum