The endemic scrubtit (Acanthornis magnus) occurs in rainforest and wet eucalypt forest. Although common, it is often difficult to see due to its secretive nature, and can be easily confused with the Tasmanian thornbill or scrubwren. It has a light cream-coloured throat, breast and belly and a brown head which assists in distinguishing the species.

The scrubtit feeds on insects and other invertebrates among bark, litter and foliage.

It breeds from September to December, laying three white, lightly-spotted eggs in a woven, domed nest.

The call is a quiet, double chirp or warble.