Cebu bulbul

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Cebu streak-breasted bulbul
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Passeriformes
Infraorder: Passerides
Family: Pycnonotidae
Genus: Hypsipetes
Species:
Subspecies:
H. s. monticola
Trinomial name
Hypsipetes siquijorensis monticola
Bourns & Worcester, 1894

The Cebu bulbul (Hypsipetes siquijorensis monticola) also known as the Cebu slaty-crowned bulbul or the Cebu streak-breasted bulbul is a subspecies of the streak-breasted bulbul. It is endemic to the Philippines found only on the island of Cebu where its natural habitat is tropical moist lowland forest. Thought extinct until its rediscovery in 1996, it is threatened by habitat loss and hunting. [1] It is likely that this will eventually be split into a separate species and if so will become one of the most endangered species in the world. [2] [3]

Contents

Description and taxonomy

EBird describes the Siquijor sub-species bird as "A medium-sized bird of foothill forest and edge as well as more open wooded areas. Fairly large for a bulbul. Dark brown above with a pale belly and a warm brown chest and throat with pale streaking. Note brown cheek and black crown that can be raised into a spiky crest. Similar to Philippine Bulbul, but larger, with a longer bill, a black crown, and a paler throat and chest. Voice consists of rather unpleasant grating chatters and harsh downslurred squeals." [4] [2]

Relative to the Siquijor streak-breasted bulbul, this bird has a paler crown, a more rufous back, a cleaner throat and is slightly smaller. The Cebu bulbul is also not tolerant of wooded areas.

It is typically encountered in singly or in pairs and is much more shy than the common Philippine bulbul. [5]

Habitat and conservation status

It is found in tropical lowland moist primary forest.[ citation needed ]

IUCN has assessed the streak-breasted bulbul as a whole as endangered with population estimates being 2,500 to 9,999 mature individuals and continuing to decrease. Most of this estimate is of the nominate subspecies. Relative to the other 2 subspecies, this bird is not tolerant to habitat loss and can only survive in the small remaining patches of forest on Cebu. Apart from habitat It is believed to face significant competition from the Philippine bulbul. [6]

Most sight records nowadays are in Tabunan which is less than 100 hectares, where local rangers have estimated just 10 birds.[ citation needed ] There is a larger forest patch in Alcoy of more than 500 hectares where it has been reported in surveys.but has not been reported on EBird despite numerous observers. [7]

There are currently no targetted species conservation programs for this bird. Conservation actions proposed include:the promotion of forest restoration and regeneration on Cebu in Tabunan and the investigation into the potential for targeted conservation, including captive breeding of this subspecies. [6]

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References

  1. "Hypsipetes siquijorensis monticola (Streak-breasted Bulbul (monticola)) - Avibase". avibase.bsc-eoc.org. Retrieved 2024-08-26.
  2. 1 2 Allen, Desmond (2020). Birds of the Philippines. Barcelona: Lynx and Birdlife Internation Fieldguides. pp. 280–281.
  3. Fishpool, L.; Tobias, J. A. (2020). del Hoyo, J.; Elliott, A.; Sargatal, J.; Christie, D. A.; de Juana, E. (eds.). "Streak-breasted Bulbul (Hypsipetes siquijorensis), version 1.0". Birds of the World Online. Cornell Lab of Ornithology, Ithaca, NY. doi:10.2173/bow.stbbul1.01.
  4. "Streak-breasted Bulbul". Ebird.
  5. Paguntalan, Lisa Marie J.; Jakosalem, Philip Godfrey. "Significant records of birds in forests on Cebu island, central Philippines". Forktail (24): 48–56.
  6. 1 2 BirdLife International. (2017). "Hypsipetes siquijorensis". IUCN Red List of Threatened Species . 2017: e.T22713185A117107155. doi: 10.2305/IUCN.UK.2017-3.RLTS.T22713185A117107155.en .
  7. "Streak-breasted Bulbul - eBird". ebird.org. Retrieved 2024-08-26.

Further reading