Rufous hornbill
Buceros hydrocorax Linnaeus, 1766
The rufous hornbill (Buceros hydrocorax) is a species in the family Bucerotidae, order Bucerotiformes. Recorded adults weigh 1.34 kg to 1.45 kg. Its IUCN Red List status is Vulnerable.

Quick facts about the rufous hornbill
- Weight
- 1.34 kg – 1.45 kgsrc for Weight
- Length
- Not recorded
- Lifespan
- Not recorded
- Diet
- Frugivoresrc for Diet
- Main food
- Not recorded
- Habitat
- forestsrc for Habitat
- Young per litter or clutch
- 2.8src for Young per litter or clutch
- Lifestyle
- Perchingsrc for Lifestyle
- Migration
- Sedentarysrc for Migration
- Conservation status
- Vulnerable (IUCN)src for Conservation status
- Countries on record
- Not recorded
Where does the rufous hornbill live?
Not recorded
What is the rufous hornbill?
The rufous hornbill (Buceros hydrocorax), also known as the Philippine hornbill and locally as kalaw (pronounced KAH-lau), is a large species of hornbill endemic to the Philippines (the largest hornbill in the country). It is called the "clock-of-the-mountains" by locals, because of its loud booming call which typically occurs every hour. Rufous hornbills inhabit moist tropical lowland forest areas, and are now regarded as a threatened species. Reasons for decline include habitat destruction, hunting and poaching for the illegal pet trade.
It is illegal to hunt, capture or possess rufous hornbills under Philippine Law RA 9147.
From the Wikipedia article “Rufous hornbill” (en.wikipedia.org/w/index.php?title=Rufous_hornbill&oldid=1358565002), by Wikipedia contributors, licensed under CC BY-SA 4.0 (creativecommons.org/licenses/by-sa/4.0). This block is kept separate from our own text.
Is the rufous hornbill endangered?
The rufous hornbill is listed as Vulnerable on the IUCN Red List: it faces a high risk of extinction in the wild.
- LCLeast Concern
- NTNear Threatened
- VUVulnerable
- ENEndangered
- CRCritically Endangered
- EWExtinct in the Wild
- EXExtinct
Category via Wikidata (CC0). Find the full assessment on the IUCN Red List. See all Vulnerable species. What the categories mean.
How is the rufous hornbill classified?
- kingdomAnimalia
- phylumChordata
- classAves
- orderBucerotiformes
- familyBucerotidae
- genusBuceros
- SpeciesBuceros hydrocorax Linnaeus, 1766
Other names and names in other languages (39)
- Northern rufous hornbillEnglish
- Northern rufous hornbillEnglish
- أبو نضوة أصهبArabic
- أبو قرن الأصهبArabic
- calau rogenc septentrionalCatalan
- dvojzoborožec hnědavýCzech
- cornbig cochWelsh
- Rødbrun NæsehornsfuglDanish
- FeuerhornvogelGerman
- Nord-FeuerhornvogelGerman
- rufa buceroEsperanto
- Cálao RojipardoSpanish
- Cálao Filipino GrandeSpanish
- Cálao rojizoSpanish
- Cálao rojizo norteñoSpanish
- tuli-sarvlindEstonian
- luzoninsarvinokkaFinnish
- Calao à casque platFrench
- filipinski kljunorožacCroatian
- tűzvörös szarvascsőrűHungarian
- Bucero rossiccioItalian
- アカサイチョウJapanese
- ugninis jaučiaragisLithuanian
- Rosse NeushoornvogelDutch
- Roodbruine NeushoornvogelDutch
- blodhornfuglNorwegian
- dzioborożec rdzawogłowyPolish
- calau-rufoPortuguese
- calau-ruivoPortuguese
- Огненный гомрайRussian
- zobákorožec maskovýSlovak
- Riđi kljunorožacSerbian
- rostnäshornsfågelSwedish
- นกเงือกแดงThai
- kalawFilipino
- Kızıl BoynuzgagaTurkish
- гомрай вогнистийUkrainian
- 棕犀鸟Chinese
- 栗色犀鳥Chinese
Relatives of the rufous hornbill
Other species in the same genus Buceros.

Great hornbill
Buceros bicornis

Rhinoceros hornbill
Buceros rhinoceros
CompareRufous hornbill vs Great hornbillRufous hornbill vs Rhinoceros hornbill
Common questions
Answered only where our data holds the answer.
How big is the rufous hornbill?
An adult rufous hornbill weighs 1.34 kg – 1.45 kg, according to values recorded on Wikidata.
Is the rufous hornbill endangered?
The rufous hornbill is listed as Vulnerable on the IUCN Red List, meaning it faces a high risk of extinction in the wild.
What kind of animal is the rufous hornbill?
The rufous hornbill (Buceros hydrocorax) belongs to the family Bucerotidae in the order Bucerotiformes.
Sources and how to cite this page
Data as of 2026-11-11. How this page is put together.
- An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles · CC0 1.0 · E096-269
Myhrvold, N.P., Baldridge, E., Chan, B., Sivam, D., Freeman, D.L. & Ernest, S.K.M. (2015) An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles. Ecology 96: 3109. https://doi.org/10.1890/15-0846R.1. Data: https://doi.org/10.6084/m9.figshare.3563457.v1 - AVONET: morphological, ecological and geographical data for all birds · CC BY 4.0 · v7
Tobias, J.A. et al. (2022) AVONET: morphological, ecological and geographical data for all birds. Ecology Letters 25: 581–597. https://doi.org/10.1111/ele.13898. Data: https://doi.org/10.6084/m9.figshare.16586228.v7 - Catalogue of Life eXtended Release · CC BY 4.0 · 2026-10-16 XR
Catalogue of Life (2026). Catalogue of Life eXtended Release, version 2026-10-16 XR. Catalogue of Life Foundation, Amsterdam, Netherlands. https://doi.org/10.48580/dgzlf - Wikimedia Commons · per file (CC0 / public domain / CC BY green, CC BY-SA amber, anything else not displayed) · 2026-11-11
Wikimedia Commons contributors. Wikimedia Commons. https://commons.wikimedia.org (each file credited to its author under its own licence). - Wikidata · CC0 1.0 · 2026-11-11
Wikidata contributors. Wikidata. https://www.wikidata.org (data retrieved via the Wikidata Query Service). - Wikipedia (English) · CC BY-SA 4.0 · 2026-11-11
Wikipedia contributors. Wikipedia, The Free Encyclopedia. https://en.wikipedia.org (text under CC BY-SA 4.0; each block names its article and revision).
Embed a card for this animal on your own site
Copy this code. The card shows the photo with its credit, key facts and a link back to this page.
CreatureData. (2026). Rufous hornbill (Buceros hydrocorax). Retrieved from https://creaturedata.com/animals/rufous-hornbill
“Rufous hornbill (Buceros hydrocorax).” CreatureData, 2026, https://creaturedata.com/animals/rufous-hornbill.
@misc{rufous_hornbill_2026,
title = {Rufous hornbill (Buceros hydrocorax)},
author = {{CreatureData}},
year = {2026},
url = {https://creaturedata.com/animals/rufous-hornbill},
note = {Data as of 2026-11-11}
}