The Bassian thrush (Zoothera lunulata), also known as the olive-tailed thrush, is a medium-sized mostly insectivorous thrush found predominantly in southeastern Australia and Tasmania. The thrushes range from 27 to 29 cm (10.5 to 11.5 in) in length and average 100 g (3.5 oz). It is estimated that the rangewide population is large, though no official count has ever been established. The Bassian thrush lives in shrubland, forests, and rainforests. It is non-migratory. Though affected by human destruction of its natural habitats, its range is so large that the impact is negligible.