The common starling appear to have arrived in Fiji in 1925 on Ono @-@ i @-@ lau and Vatoa islands . It may have colonised from New Zealand via Raoul in the Kermadec Islands where it is abundant , that group being roughly equidistant between New Zealand and Fiji . Its spread in Fiji have been limited , and there are doubts about the population 's viability . Tonga was colonised at about the same date and the birds there have been slowly spreading north through the group .