Rhinoplax vigil
Silhouette: Charles J. Sharp and T. Michael Keesey · PhyloPic
In 3 days ~50% in a week ~80%
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 |
Possible
About 20% of wildlife watchers report a Helmeted Hornbill sighting in Danum Valley Conservation Area on a given day, based on 11 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 69th most-seen of the 258 birds we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
July
In that month about 40% of wildlife watchers report a Helmeted Hornbill in Danum Valley Conservation Area on a given day, against under 5% in April, August and October–January, 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.
Yes
Of the 3 parks where we can rate Helmeted Hornbill sightings, Danum Valley Conservation Area has the highest daily chance: about 20%. Next come Taman Negara National Park (Malaysia, about 20%) and Kinabatangan Wildlife Sanctuary (Malaysia, about 10%).
Same family: Bucerotidae
The closest relatives of the Helmeted Hornbill that you can see in Danum Valley Conservation Area (family Bucerotidae, Hornbills) are Rhinoceros Hornbill (about 60%), Wreathed Hornbill (about 30%) and Bushy-crested Hornbill (about 20%), 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 Danum Valley Conservation Area (11 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.
