Zoothera lunulata
Silhouette: Francesco "Architetto" Rollandin · PhyloPic
In 3 days <5% in a week ~10%
The Bassian thrush (Zoothera lunulata), also known as the olive-tailed thrush, is a medium-sized mostly insectivorous thrush found from northern Queensland to southeastern Australia. It also occurs in Tasmania, on some larger islands of Bass Strait, and on Kangaroo Island. The thrushes range from 27 to 29 cm (10.5 to 11.5 in) in length and average 100 g (3.5 oz) in weight.
It is estimated that the range-wide population is large, though no official count has ever been established. The population appears to be declining because of ongoing habitat destruction and degradation, but not at a rate that is concerning.
The Bassian thrush lives in shrubland, forests, and rainforests. It appears to be a resident species, but there is some evidence that some individuals have nomadic tendencies, usually in the non-breeding season. The thrush ranges in colour from brown to olive, with a white ring around its eyes and black bars on its back, rear, and head. Its underbody is paler, with dark scalloping, and its wings have a dark bar running the length of the underside.
Nesting begins in the winter months (from late June) and continues till the end of summer. The two or three eggs which form a clutch vary from pale green or blue to light stone. The cup-shaped nest is usually built of strips of bark, at times mixed with leaves, and is lined with grasses and rootlets. Sites vary from a few feet to 50 feet (15 m) from ground. A fork in a tree is usually favoured, but the nest may be placed on a stump, or a ledge in a cave.
Bassian thrushes are known to dislodge their prey out of piles of leaves by disturbing the leaf litter. The birds move quietly and often pause to listen for the movements of the insects. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Lamington National Park | 🇦🇺 Australia | |
| 2 | Great Otway National Park | 🇦🇺 Australia | |
| 3 | Wilsons Promontory National Park | 🇦🇺 Australia | |
| 4 | Royal National Park | 🇦🇺 Australia | |
| 5 | Freycinet National Park | 🇦🇺 Australia | |
| 6 | Grampians National Park | 🇦🇺 Australia | |
| 7 | Cradle Mountain-Lake St Clair National Park | 🇦🇺 Australia | |
| 8 | Booderee National Park | 🇦🇺 Australia | |
| 9 | Maria Island National Park | 🇦🇺 Australia | |
| 10 | Blue Mountains National Park | 🇦🇺 Australia | |
| 11 | Springbrook National Park | 🇦🇺 Australia | |
| 12 | Kosciuszko National Park | 🇦🇺 Australia |
Rare
Under 5% of wildlife watchers report a Bassian Thrush sighting in Kosciuszko National Park on a given day, based on 10 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 119th most-seen of the 127 birds we can rate there. Over three days the chance rises to under 5%, and over a week to about 10%, if each day is a fresh chance.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Bassian Thrush in Kosciuszko National Park on a given day, so our monthly data shows no clear season. June has too few records to rate.
Between 2 and 5 pm
Across all the parks we cover, that three-hour window holds the most Bassian Thrush sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
12th of 12
Of the 12 parks where we can rate Bassian Thrush sightings, Kosciuszko National Park ranks 12th at under 5%. The best odds are in Lamington National Park (Australia, about 20%), Great Otway National Park (Australia, about 10%) and Wilsons Promontory National Park (Australia, about 10%).
GBIF citizen-science records
It is estimated from how often the Bassian Thrush is recorded against all the birds logged in Kosciuszko National Park (10 verified sightings from 2019 to 2026), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
