Rhinoplax vigil
Silhouette: Charles J. Sharp and T. Michael Keesey · PhyloPic
In 3 days ~40% in a week ~70%
The helmeted hornbill (Rhinoplax vigil) is a very large bird in the hornbill family. It is found on the Malay Peninsula, Sumatra, Borneo, Thailand and Myanmar. The casque (helmetlike structure on the head) accounts for some 11% of its 3 kg weight. Unlike any other hornbill, the casque is almost solid, and is used in head-to-head combat among males. It is a belief among the Punan Bah that a large helmeted hornbill guards the river between life and death.
It has mostly blackish plumage, except that the belly and legs are white and the tail is white with a black band near the tip of each feather. The tail is long and the two central tail feathers are much longer than the others, giving the bird a total length greater than that of any other hornbill species. The body length is 110–120 cm (43–47 in), not counting the tail feathers, which boost the length a further 50 cm (20 in). One male weighed 3.1 kg (6.8 lb) in weight while two females averaged about 2.7 kg (6.0 lb). Although sometimes considered the largest Asian hornbill, their body weight appears to be similar to that of the great hornbill (and considerably less than the African ground hornbills).
This species has... Wikipedia →
Recording0:08
Malaysia · 2025
© ZHONG · iNaturalist · CC BY-NC 4.0
Recording0:39
Malaysia · 2026
© oliver_wu · iNaturalist · CC BY-NC 4.0
Recording0:30
Malaysia · 2025
René Heinrich · iNaturalist · CC0
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Danum Valley Conservation Area | 🇲🇾 Malaysia | |
| 2 | Taman Negara National Park | 🇲🇾 Malaysia | |
| 3 | Kinabatangan Wildlife Sanctuary | 🇲🇾 Malaysia |
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | Bois de la Bâtie | 🇨🇭 Switzerland |
With luck
About 10% of wildlife watchers report a Helmeted Hornbill sighting in Kinabatangan Wildlife Sanctuary on a given day, based on 25 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 67th most-seen of the 231 birds we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
January–April, July and October–November
In those months about 20% of wildlife watchers report a Helmeted Hornbill in Kinabatangan Wildlife Sanctuary on a given day, against under 5% in May, September and December, the lowest months.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Helmeted Hornbill sightings with a recorded time, and about half of them come between 6 am and 6 pm: it is most active around dawn and dusk.
3rd of 3
Of the 3 parks where we can rate Helmeted Hornbill sightings, Kinabatangan Wildlife Sanctuary ranks 3rd at about 10%. The best odds are in Danum Valley Conservation Area (Malaysia, about 20%) and Taman Negara National Park (Malaysia, about 20%).
Same family: Bucerotidae
The closest relatives of the Helmeted Hornbill that you can see in Kinabatangan Wildlife Sanctuary (family Bucerotidae, Hornbills) are Oriental Pied Hornbill (about 90%), Black Hornbill (about 60%) and Rhinoceros Hornbill (about 50%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Helmeted Hornbill is recorded against all the birds logged in Kinabatangan Wildlife Sanctuary (25 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.
