Fauna of Australia group of endemic parrots, order Psittaciformes. Australian parrots comprise a sixth of the world's parrots, including many cockatoos and galahs. The kookaburra is the largest species of the kingfisher family, known for its call, which sounds uncannily like loud, echoing human laughter. The passerines of Australia, also known as songbirds or perching birds, include wrens, robins, the magpie group, thornbills, pardalotes, the huge honeyeater family, treecreepers, lyrebirds, birds of paradise and bowerbirds. The satin bowerbird has attracted the interest of evolutionary psychologists; it has a complex courtship ritual in which the male creates a bower filled with blue, shiny items
Australian Silver Kookaburra mintage of the one troy ounce coin is capped, while the others have unlimited mintage based on demand. Perth Mint originally intended to expand the 2013 mintage to one million coins, however they later reduced this number to 500,000 and declared that future years would continue to be limited to this amount. In addition to the annual design change, there is also a design change between the bullion and proof versions of the coin each year. No proof coins were minted between 2006-2011; however, there was a 1-ounce silver proof Kookaburra colored coin struck in 2012 for the Discover Australia