In this series, we showcase the diversity of rare, peculiar, and fascinating native flora and fauna in Singapore. We enthusiastically invite you to explore our nature reserves and gardens, urging you to pause and observe your surroundings—whether by looking up or down—to see if you can catch a glimpse of these unique wonders.
Hornbills
Hornbills, also known as forest farmers, play a vital ecological role in their natural habitats, particularly in tropical and subtropical regions. This nickname aptly describes their significant contribution to the spread and germination of seeds, especially those from big-fruited forest trees. There are around 60 species of hornbills found in Africa and Asia.
These large black and white birds with contrasting-coloured beaks are not to be mistaken for toucans. Hornbills and toucans are both tropical fruit-eating birds and do the same job of spreading seeds to keep forests healthy, but their similarities end there. Most hornbills have a distinctive beak feature called a casque.
Image Courtesy of Francis Yap via Birds of Singapore
Three species of hornbill are believed to be native to Singapore––the Oriental Pied Hornbill, Rhinoceros Hornbill, and Helmeted Hornbill. These birds flourished in the 1800s, but gradually disappeared from the landscape to the point of local extinction, falling victim to hunting, habitat loss due to deforestation, and other human activities.
In 1994, a pair of wild Oriental Pied Hornbill, believed to be visitors from Malaysia, was spotted at Pulau Ubin. Later on, the first local breeding was observed in 1997.
Image Courtesy of Francis Yap via Birds of Singapore
Hornbills nest in suitable holes in a tree. When a female hornbill is ready to lay eggs, she seals the entrance with mud, fibres, and regurgitated fruit delivered to her by the male. She leaves a narrow opening through which the male brings food to her and their young and breaks out only after a few months when the nestlings are fully fledged.
Natural tree holes for nesting are limited in Singapore’s natural environment. In an effort to encourage wild hornbills to breed, over 20 artificial nest-boxes were installed within trees all over Singapore. Since their re-introduction, Oriental Pied Hornbills have multiplied and thrived in Singapore. They are the only true wild hornbills in Singapore.
Image courtesy of Hiyashi Haka
Common name: Oriental Pied Hornbill
Scientific name: Anthracoceros albirostris
The Oriental Pied Hornbill is a medium-sized hornbill with mostly black plumage with a distinctive white patch on its face, a pale yellowish bill and a small casque. Females have a smaller bill. It mainly feeds on fruit but also prey on small animals, such as small birds and reptiles.
They can be found in wooded areas, forest edges, mangroves, gardens, and parks around Singapore. Most Asian hornbills require large areas of forest to survive, but the Oriental Pied Hornbill has demonstrated an ability to adapt to urban environments, making use of the remaining patches of forests within the city. They have been spotted in urban areas that border green spaces and can tolerate a moderate level of human presence and activity. Their population is currently stable and is not a concern on the IUCN Red List of Threatened Species.
Visitors spotted in Singapore
Non-breeding wild visitors from neighbouring countries have been sighted on our shores and offshore islands. It is suggested that the degradation of regional forests is driving these species to search for new suitable habitat. They include the White-crowned Hornbill and the Black Hornbill.
Common name: White-crowned Hornbill
Scientific name: Berenicornis comatus
For the first time this year, a female White-crowned Hornbill was sighted on Pulau Ubin. It is a large hornbill with a bushy, upright white crest and a white tail. Males are white from the head down to the belly, and females are predominantly black, with only a white crest. It is listed as Endangered on the IUCN Red List of Threatened Species.
Image Courtesy of Zhang Shubo (Kiri) via Birds of Singapore
Common name: Black Hornbill
Scientific name: Anthracoceros malayanus
The Black Hornbill is a medium-sized hornbill with black plumage and broad white tips on its outer tails. Males have a pale yellow bill and casque; and females have a black bill and casque. It has been spotted within Woodlands and on Pulau Ubin. It is listed as Vulnerable on the IUCN Red List of Threatened Species.
Image courtesy of GerifalteDelSabana
Some of these insights into the population and distribution of the Oriental Pied Hornbill attributed to data from eBird and iNaturalist, collected and submitted by the community. You, too, can contribute to research by providing valuable data.
If you come across hornbills in the wild, we encourage you to (safely and respectfully) capture photos and document your observations. We especially recommend using the local SGBioAtlas app, the eBird app, or the iNaturalist app, which enables you to share and validate your findings within the community.
Discover the wonders of nature, observe the intricacies of the world around you, and let curiosity be your guide. Happy exploring!
📷 Post your findings on social media and tag us on Instagram or Facebook.
References and further reading:
📗 Conserving Hornbills in the Urban Environment
📃 A Note on Oriental Pied Hornbill reintroduction in Singapore and its dispersal from 2010–2021
📄 Aberrant Behaviour Of A Female Great Hornbill And A Female Rhinoceros Hornbill
