If the habitat is suitable and unnatural predators such as domestic cats and foxes are eliminated birds like White-browed Scrubwrens and Superb Fairy-wrens would probably make their own way to the site. Most birds, even poor fliers, can traverse areas of unsuitable habitat when migrating or dispersing. This often occurs at night.
Greg Dr Greg. P. Clancy Ecologist and Wildlife Guide Coutts Crossing NSW
Eastern Yellow Robins, White-browed Scrubwrens and Large-billed Scrubwrens have established populations on Susan Island, in the Clarence River at Grafton, following the removal of cattle and the growth of thick vegetation, both native and introduced. The nearest other permanent populations of these species are some kilometres away. So if you provide safe, suitable habitat the birds should find their own way there. If they don’t you could try re-introductions.
Dr Greg. P. Clancy Ecologist and Wildlife Guide Coutts Crossing NSW