Gerygone mouki
Silhouette: Sheatherius · PhyloPic
In 3 days ~20% in a week ~40%
The brown gerygone (Gerygone mouki), previously known as the brown warbler, is a small passerine bird native to eastern coastal Australia. The upper parts are olive-brown (or olive-grey for the nominate subspecies native to far-north Queensland), while its face and underparts are a much paler grey, cream, or washed-out brown. The tail feathers are dark and may be white-tipped. It is approximately 10 cm in length.
The brown gerygone has a relatively large range. Although total population trends have not been quantified, it is considered of "least concern" by the IUCN. It may be sighted in coastal rainforest, singly or in small groups of two to four. It feeds on insects. The brown gerygone call is a soft what-is-it.
It is not closely related to either true Old World Warblers or the New World Warblers, but belongs rather to the Corvida parvorder comprising many tropical and Australian passerines, as well as crows. The brown gerygone is similar to both the large-billed (G. magnirostris) and mangrove (G. levigaster) gerygones. It differs from the former by having a distinctive white eyebrow and a grey-tinged face. The mangrove gerygone, while having a white eyebrow, lacks the grey face, has more white on the flanks and has a redder eye. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Lamington National Park | 🇦🇺 Australia | |
| 2 | Royal National Park | 🇦🇺 Australia | |
| 3 | Springbrook National Park | 🇦🇺 Australia | |
| 4 | Blue Mountains National Park | 🇦🇺 Australia | |
| 5 | Booderee National Park | 🇦🇺 Australia | |
| 6 | Wilsons Promontory National Park | 🇦🇺 Australia | |
| 7 | Daintree National Park | 🇦🇺 Australia |
With luck
About 10% of wildlife watchers report a Brown Gerygone sighting in Sydney on a given day, based on 1,213 verified sightings from GBIF citizen-science data. It is the 75th most-seen of the 243 birds we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
April to February
In those months about 10% of wildlife watchers report a Brown Gerygone in Sydney on a given day, against under 5% in March, the lowest month.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Brown Gerygone sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 3 cities where we can rate Brown Gerygone sightings, Sydney has the highest daily chance: about 10%. Next come Melbourne (Australia, under 5%) and Brisbane (Australia, under 5%).
GBIF citizen-science records
It is estimated from how often the Brown Gerygone is recorded against all the birds logged in Sydney (1,213 verified sightings), 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.
