Pachycephala simplex
Silhouette: Sheatherius · PhyloPic
In 3 days ~10%
The grey whistler (Pachycephala simplex) or brown whistler, is a species of bird in the family Pachycephalidae. It is found in northern Australia and New Guinea. Its natural habitats are subtropical or tropical moist lowland forest and subtropical or tropical mangrove forest.
Found on the Kai Islands (southwest of New Guinea) Found on western Papuan islands, Aru Islands and northwest New Guinea Found on Meos Num (Geelvink Bay northwest of New Guinea) Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Raja Ampat | 🇮🇩 Indonesia | |
| 2 | Daintree National Park | 🇦🇺 Australia | |
| 3 | Kakadu National Park | 🇦🇺 Australia |
Rare
Under 5% of wildlife watchers report a Grey Whistler sighting in Kakadu National Park on a given day, based on 27 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 144th most-seen of the 186 birds we can rate there. Over three days the chance rises to about 10%, if each day is a fresh chance.
December
In that month about 20% of wildlife watchers report a Grey Whistler in Kakadu National Park on a given day, against under 5% in January and March–November, the lowest months. That is one of Kakadu National Park's wettest months, with about 250 mm of rain against almost none in August. February has too few records to rate.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Grey Whistler sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
3rd of 3
Of the 3 parks where we can rate Grey Whistler sightings, Kakadu National Park ranks 3rd at under 5%. The best odds are in Raja Ampat (Indonesia, about 20%) and Daintree National Park (Australia, about 10%).
GBIF citizen-science records
It is estimated from how often the Grey Whistler is recorded against all the birds logged in Kakadu National Park (27 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.
