Microhierax fringillarius
Silhouette: Sheatherius · PhyloPic
In 3 days ~60% in a week ~90%
The black-thighed falconet (Microhierax fringillarius) is one of the smallest birds of prey, typically measuring between 14–16 centimetres (5.5–6.3 in) long, with a 27–32 centimetres (11–13 in) wingspan, which is a size comparable to a typical sparrow. It is native to Brunei, Myanmar, Thailand, Malaysia, Singapore and Indonesia, and vagrant to Sri Lanka.
Thomas Horsfield described to the Linnean Society of London in 1820 a Javan variety of Falco cærulescens (the collared falconet). He noted that "the Javan specimens are somewhat smaller, and differently marked" than the Bengal specimen which had been described by John Edwards in 1750. A fuller description was published in his 1824 book, Zoological Researches in Java.
Also in 1824, Auguste Drapiez published the name Falco fringillarius, and Nicholas Vigors proposed the genus Ierax or Hierax. This is a minute, shrike-like falcon, with a squarish tail that is frequently spread. The adult male is glossy black above, with a white forehead streak that arcs around black cheeks. It has a white or rufous-washed throat, with a white breast shading into a rufous abdomen. Its thighs and flanks... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Way Kambas National Park | 🇮🇩 Indonesia | |
| 2 | Taman Negara National Park | 🇲🇾 Malaysia | |
| 3 | Tanjung Puting National Park | 🇮🇩 Indonesia | |
| 4 | Bali Barat National Park | 🇮🇩 Indonesia | |
| 5 | Khao Luang National Park | 🇹🇭 Thailand | |
| 6 | Kaeng Krachan National Park | 🇹🇭 Thailand | |
| 7 | Kerinci Seblat National Park | 🇮🇩 Indonesia |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Kuala Lumpur | 🇲🇾 Malaysia | |
| 2 | Singapore | 🇸🇬 Singapore |
Possible
About 20% of wildlife watchers report a Black-thighed Falconet sighting in Taman Negara National Park on a given day, based on 342 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 41st most-seen of the 293 birds we can rate there. Over three days the chance rises to about 60%, and over a week to about 90%, if each day is a fresh chance.
January, April and July–August
In those months about 30% of wildlife watchers report a Black-thighed Falconet in Taman Negara National Park on a given day, against about 10% in October to December, the lowest months.
Between 1 and 4 am
Across all the parks we cover, that three-hour window holds the most Black-thighed Falconet sightings with a recorded time, and about half of them come between 6 pm and 6 am: it is most active around dawn and dusk.
2nd of 7
Of the 7 parks where we can rate Black-thighed Falconet sightings, Taman Negara National Park ranks 2nd at about 20%. The best odds are in Way Kambas National Park (Indonesia, about 30%).
GBIF citizen-science records
It is estimated from how often the Black-thighed Falconet is recorded against all the birds logged in Taman Negara National Park (342 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.
