This Regent Bowerbird piece was released in 2013 as part of the Perth mint 's Birds of Australia series. The series celebrates some of Australia's unique bird life. The reverse of this particular coin features a coloured depiction of the Regent Bowerbird with the legend 'REGENT BOWERBIRD'. The obverse houses the Ian Rank-Broadley portrait of HM Queen Elizabeth II with the legend 'ELIZABETH II - AUSTRALIA - 50 CENTS - 1/2 OZ 999 SILVER - 2013.'