- Length: 12 – 13 cm long (bill tip to tail tip)
- Weight: 19.1g (mean), 17g - 20g (min-max)
- Song heard between late August and mid-April.
- Strongly territorial during breeding and faithful to territory from year to year.
- The nest is a domed ball made of grasses with an entrance hole 6cm to 8cm wide near the top. It is lined with soft feathers of several species and is usually well hidden in tussac stems, a tussac pedestal or in a rock crevice between ground level and 60 cm above ground.
- Three to four pinkish eggs, covered with tiny red or light brown spots, are laid between early October and December. Two broods are probably reared in a season.