Animalia > Chordata > Aves > Bucerotiformes > Bucerotidae > Aceros > Aceros cassidix

Aceros cassidix (Knobbed Hornbill)

Wikipedia Abstract

The knobbed hornbill (Rhyticeros cassidix), also known as Sulawesi wrinkled hornbill, is a colourful hornbill native to Indonesia. The species is sometimes placed in the genus Aceros. The knobbed hornbill is the faunal symbol of South Sulawesi province.
View Wikipedia Record: Aceros cassidix

EDGE Analysis

Uniqueness Scale: Similiar (0) 
 Unique (100)
Uniqueness & Vulnerability Scale: Similiar & Secure (0) 
 Unique & Vulnerable (100)
ED Score: 11.7425
EDGE Score: 3.93124


Diet [1]  Frugivore
Diet - Fruit [1]  100 %
Forages - Canopy [1]  70 %
Forages - Mid-High [1]  20 %
Forages - Ground [1]  10 %
Clutch Size [3]  2
Incubation [2]  33 days


Name Countries Ecozone Biome Species Report Climate Land
Sulawesi lowland rain forests Indonesia Australasia Tropical and Subtropical Moist Broadleaf Forests
Sulawesi montane rain forests Indonesia Australasia Tropical and Subtropical Moist Broadleaf Forests

Protected Areas

Name IUCN Category Area acres Location Species Website Climate Land Use
Bogani Nani Wartabone National Park II 770291 Sulawesi, Indonesia  
Danau Matano - Towuti Recreation Parks Nature Recreation Park V 96082 Sulawesi, Indonesia  
Gunung Ambang Nature Reserve Ia 30987 Sulawesi, Indonesia  
Gunung Manembo-nembo Nature Reserve Wildlife Reserve IV 18731 Sulawesi, Indonesia  
Lore Lindu National Park II 577959 Sulawesi, Indonesia  

Biodiversity Hotspots

Name Location Endemic Species Website
Wallacea East Timor, Indonesia Yes

Prey / Diet

Ficus altissima (false banyan)[4]
Ficus benjamina (weeping fig)[4]
Ficus chrysolepis[4]
Ficus forstenii[4]
Ficus gul[4]
Ficus subcordata[4]
Ficus tinctoria (fig)[4]
Ficus tinctoria subsp. gibbosa[4]

Prey / Diet Overlap

Competing SpeciesCommon Prey Count
Acerodon jubatus (golden-capped fruit bat)3
Aceros corrugatus (Wrinkled Hornbill)2
Aceros waldeni (Walden's Hornbill)2
Anorrhinus galeritus (Bushy-crested Hornbill)2
Anorrhinus tickelli (Brown Hornbill)3
Anthracoceros albirostris (Oriental Pied Hornbill)3
Anthracoceros malayanus (Black Hornbill)2
Aplonis metallica (Metallic Starling)1
Arborophila chloropus (Green-legged Partridge)1
Arctictis binturong (Binturong)2
Berenicornis comatus (White-crowned Hornbill)1
Buceros bicornis (Great Hornbill)3
Buceros rhinoceros (Rhinoceros Hornbill)3
Callosciurus adamsi (ear-spot squirrel)1
Callosciurus finlaysonii (Finlayson's squirrel)3
Callosciurus nigrovittatus (black-striped squirrel)1
Callosciurus notatus (plantain squirrel)2
Callosciurus prevostii (Prevost's squirrel)3
Chalcophaps indica (Common Emerald Dove)1
Corvus enca (Slender-billed Crow)1
Cynopterus brachyotis (lesser short-nosed fruit bat)1
Cynopterus sphinx (greater short-nosed fruit bat)1
Dicaeum agile (Thick-billed Flowerpecker)1
Dobsonia minor (lesser naked-backed fruit bat)1
Dobsonia moluccensis (Moluccan naked-backed fruit bat)1
Ducula bicolor (Pied Imperial Pigeon)1
Elephas maximus (Asiatic Elephant)2
Eudynamys scolopaceus (Asian Koel)1
Gracula religiosa (Hill Myna)3
Hoolock hoolock hoolock (hoolock gibbon)1
Hylobates lar (white-handed gibbon)4
Hylobates moloch (silvery gibbon)4
Lophura ignita (Crested Fireback)1
Lophura nycthemera (Silver Pheasant)1
Macaca cyclopis (Taiwan macaque)2
Macaca fascicularis (long-tailed macaque)3
Macaca nemestrina (pigtail macaque)3
Macaca nigra (Celebes crested macaque)2
Macroglossus minimus (lesser long-tongued fruit bat)1
Muntiacus muntjak (Indian muntjac)2
Nyctimene albiventer (common tube-nosed fruit bat)1
Oriolus chinensis (Black-naped Oriole)2
Penthetor lucasi (Lucas's short-nosed fruit bat)1
Phalanger orientalis (Northern Common Cuscus)1
Philemon buceroides (Helmeted Friarbird)1
Pongo pygmaeus (orangutan)2
Presbytis melalophos (mitred leaf monkey)1
Presbytis potenziani (Mentawai leaf monkey)1
Pteropus conspicillatus (spectacled flying fox)1
Pteropus giganteus (Indian flying fox)1
Pteropus neohibernicus (great flying fox)1
Pteropus vampyrus (large flying fox)2
Ptilinopus melanospilus (Black-naped Fruit Dove)1
Pycnonotus eutilotus (Puff-backed Bulbul)2
Pycnonotus goiavier (Yellow-vented Bulbul)2
Pycnonotus plumosus (Olive-winged Bulbul)2
Ratufa affinis (pale giant squirrel)1
Ratufa bicolor (black giant squirrel)3
Rhinoplax vigil (Helmeted Hornbill)4
Rhyticeros narcondami (Narcondam Hornbill)1
Rhyticeros undulatus (Wreathed Hornbill)3
Rousettus amplexicaudatus (Geoffroy's rousette)1
Rusa unicolor (sambar)2
Semnopithecus entellus (Hanuman langur)1
Sphecotheres viridis (Green Figbird)1
Sundasciurus tenuis (slender squirrel)1
Sus scrofa (wild boar)1
Syconycteris australis (southern blossom bat)1
Tamiops rodolphii (Cambodian striped squirrel)1
Trachypithecus obscurus (dusky leaf monkey)1
Treron teysmannii (Sumba Green Pigeon)1
Treron vernans (Pink-necked Green Pigeon)1
Trichoglossus haematodus (Coconut Lorikeet)2
Zosterops chloris (Lemon-bellied White-eye)1
Zosterops palpebrosus (Oriental White-eye)2

Institutions (Zoos, etc.)

Institution Infraspecies / Breed 
Bronx Zoo/Wildlife Conservat'n Society
HeverJardin d'Oiseaux Tropicaux
Los Angeles Zoo & Botanical Gardens
Ouwehand Zoo
Parc Paradisio S.A.
Parque Ornitologico de Lourosa
Sacramento Zoo
San Diego Wild Animal Park
San Diego Zoo
St. Augustine Alligator Farm
Stichting Nederlands Opvang Papegaaien
Woodland Park Zoological Gardens


Southern Asia;



Attributes / relations provided by
1Hamish Wilman, Jonathan Belmaker, Jennifer Simpson, Carolina de la Rosa, Marcelo M. Rivadeneira, and Walter Jetz. 2014. EltonTraits 1.0: Species-level foraging attributes of the world's birds and mammals. Ecology 95:2027
2del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.
3Jetz W, Sekercioglu CH, Böhning-Gaese K (2008) The Worldwide Variation in Avian Clutch Size across Species and Space PLoS Biol 6(12): e303. doi:10.1371/journal.pbio.0060303
4"Fig-eating by vertebrate frugivores: a global review", MIKE SHANAHAN, SAMSON SO, STEPHEN G. COMPTON and RICHARD CORLETT, Biol. Rev. (2001), 76, pp. 529–572
Ecoregions provided by World Wide Fund For Nature (WWF). WildFinder: Online database of species distributions, ver. 01.06 WWF WildFINDER
Biodiversity Hotspots provided by Critical Ecosystem Partnership Fund
Images provided by Google Image Search
Abstract provided by DBpedia licensed under a Creative Commons License
Weather provided by NOAA METAR Data Access