Isabela oriole | |
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Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Aves |
Order: | Passeriformes |
Family: | Oriolidae |
Genus: | Oriolus |
Species: | O. isabellae |
Binomial name | |
Oriolus isabellae Ogilvie-Grant, 1894 | |
Known locations of sightings or collections |
The Isabela oriole (Oriolus isabellae) is a species of the oriole family endemic to Luzon in the Philippines. The bird was presumed to be extinct for many years until its rediscovery in December 1993 near Diffun, Quirino, [2] and in Mansarong in September 1994. [3] Additional sightings were made in San Mariano, Isabela. and Baggao, Cagayan Valley [4] It It is found in moist lowland forest up to 440 masl. It is threatened by habitat loss and hunting.
The Isabela oriole is commonly confused with the much more common white-lored orioles and black-naped orioles. It is differentiated by its extremely large bill grey bill, uniform olive-yellow plumage and lack of white on its lores.
The Isabela oriole is most closely related to the white-lored oriole. Both species are closely related to the paraphyletic Philippine oriole. [5] The Isabela oriole is sometimes considered to form a superspecies with the dark-throated oriole and the Philippine oriole. [6] Alternate names for the Isabela oriole include the green-lored oriole and olive-lored oriole.
The Isabela oriole is now confined to the lowland forests in the Northern Sierra Madre mountain range in Luzon. [7] It is frequently seen in the canopy and middle storeys of forests and also forest edge or patches up to 440 masl. It is seen in mixed flocks with other birds such as bar-bellied cuckooshrikes, black-and-white trillers, blackish cuckooshrikes and other forest birds.
It has not been recorded in Bataan province since 1947 despite an intensive search done in 2014. [1]
The Isabela oriole has a known population of about 50-250 mature individuals and is assessed as Critically Endangered based on its extremely small and fragmented population. [1] Organisations such as Buhay-Ilang and the Mabuwaya Foundation are working to conserve them with educational programs and festivals celebrating this bird. The oriole is now a Flagship species for the North Sierra Madre National Park.
Since 2015, a research and conservation project for the Isabela Oriole has been implemented in Baggao by the Mabuwaya Foundation. Information, education and communication, community consultations are held in Baggao with the local government, the Department of Environment and Natural Resources and local residents. Plans are underway to declare the oriole site in Baggao a Critical Habitat and to encourage ecotourism. [8]
The Luzon scops owl or the Luzon highland scops owl is a species of scops owl endemic to Luzon, Philippines. Not to be confused with the Philippine scops owl, sometimes referred to as the Luzon lowland scops owl, which is a more common species that shares the same range. The Luzon scops owl, however, is smaller and inhabits higher altitudes than its lowland relative.
The cream-breasted fruit dove or cream-bellied fruit dove is a species of bird in the family Columbidae. It is endemic to the Luzon region of the Philippines.Its natural habitat is subtropical or tropical moist lowland to montane forests of up to 1,300 masl. It is threatened by habitat loss, and trapping for the pet trade.
The Philippine dwarf kingfisher is a species of bird in the family Alcedinidae that is endemic to the Philippines found in the islands of Luzon, Polillo Islands, Catanduanes, Basilan, Samar, Leyte and Mindanao. Its natural habitat is tropical moist lowland forests. But it is threatened by habitat loss.
The celestial monarch is a species of bird in the family Monarchidae, and one of the most attractive of all the monarch flycatchers, with its spectacular blue crest and large greenish-yellow wattle. It is endemic to the Philippines with its extant range being in Luzon, Samar, Mindanao Tawi-Tawi and Basilan and it being possibly extinct on Negros and Sibuyan Island. It is often observed in mixed flocks with other birds such as blue fantails, rusty-crowned babblers, rufous paradise flycatchers, both short-crested monarchs and black-naped monarchs and other small forest birds. Its natural habitat is tropical moist lowland forests up to 750 masl. It is one of the most sought after birds by birdwatchers in the Philippines and in the world.
The ashy-breasted flycatcher is a species of bird in the family Muscicapidae. It is endemic to the Philippines found only on the islands of Negros and Luzon. Its natural habitat is tropical moist lowland forests. It is threatened by habitat loss.
The Cordillera ground warbler, also known as Rabor's wren-babbler or the Luzon wren-babbler, is a species of bird currently placed in the family Locustellidae. It is endemic to the Philippines, where it is found in northwest Luzon in the foothills of the Cordillera Mountain Range. Some taxonomists continue to list the species in the Timaliidae, others in the Pellorneidae. Its natural habitat is tropical moist lowland forests. It is threatened by habitat loss.
The white-lored oriole is a species of bird in the family Oriolidae.
The black-eared oriole, or Buru oriole, is a species of bird in the family Oriolidae. It is native to Buru island.
The Philippine oriole or grey-throated oriole is a species of bird in the family Oriolidae. It is endemic to the Philippines.
The dark-throated oriole is a species of bird in the family Oriolidae.
The golden-crowned babbler is a species of bird in the family Zosteropidae. It is endemic to the Philippines only being found in the moist tropical forest in Northern Luzon. It is threatened by habitat loss.
The Bicol ground warbler is a species of passerine bird in the family Locustellidae. It is endemic to the island of Luzon in the Philippines, where it is found in the southern parts of the island. Along with its other conspecifics, such as the Cordillera ground warbler and the Sierra Madre ground warbler, it is one of the most elusive birds in the country. Its natural habitat is tropical moist lowland forest. It is threatened by habitat loss.
Balbalasang–Balbalan National Park is a protected area of the Philippines located in the municipality of Balbalan, Kalinga in the Cordillera Administrative Region. The park covers an area of 1,338 hectares and is centered on Mount Balbalasang in the barangay of the same name near the provincial border with Abra. Dubbed the "green heart of the Cordillera", the park is representative of the rich biodiversity and landscape of this mountain region with some of the most intact pine forests and richly endemic flora and fauna. It was declared a national park in 1972 by virtue of Republic Act No. 6463.
The Luzon flameback is a species of bird in the family Picidae. It is found on the northern islands of Luzon, Polillo, Catanduanes and Marinduque, Philippines. It is sometimes considered a subspecies of the greater flameback.
The Cebu boobook or Cebu hawk-owl is a species of owl in the family Strigidae. It is endemic to the Philippines. It was formerly considered a subspecies of the Philippine hawk-owl, but was reclassified in 2012, as voice and other data suggested placement in a distinct species.
The Sierra Madre ground warbler is a species of passerine bird in the family Locustellidae. It is endemic to the island of Luzon in the Philippines, where it is found in the northeastern and eastern foothills of the Sierra Madre. Its habitat is in tropical moist lowland and the lower reaches of tropical montane forest. Along with its closest relatives, the Cordillera ground warbler and the Bicol ground warbler, it is one of the most elusive birds in the country due to its extremely shy nature. While not officially threatened, its population is said to be declining due to habitat destruction through deforestation.
The Northern Sierra Madre Natural Park is the largest protected area of the Philippines covering the northern range of the Sierra Madre mountains of eastern Luzon. The park is located in the eastern part of the province of Isabela in Cagayan Valley containing a total of 359,486 hectares. It was first declared a wilderness reserve encompassing an area within a 45 kilometres (28 mi) radius of Palanan Point known as the Palanan Wilderness Area through Letter of Instructions No. 917-A signed by President Ferdinand Marcos on September 7, 1979. On March 10, 1997, the area was converted into a natural park with the signing of Proclamation No. 978 by President Fidel Ramos.
The Magapit Protected Landscape is a protected area of forested limestone hills and grasslands in the Cagayan Valley of northern Luzon island in the Philippines. It covers an area of 3,403.62 hectares in northeastern Cagayan province straddling the municipalities of Lal-lo and Gattaran. The park was established as a game refuge and bird sanctuary on 15 August 1947 covering an initial area of 4,554 hectares declared through Administrative Order No. 10 by President Manuel Roxas. On 23 April 2000, the park was redesignated as a protected landscape area under the National Integrated Protected Areas System Act through Proclamation No. 285 signed by President Joseph Estrada. The park is a component of the Northeastern Cagayan Key Biodiversity Area and also contains the Lal-lo and Gattaran Shell Middens, a proposed World Heritage Site.
The Sierra Madre is the longest mountain range in the Philippines. Spanning over 540 kilometers (340 mi), it runs from the province of Cagayan down to the province of Quezon, forming a north–south direction on the eastern portion of Luzon, the largest island of the archipelago. It is bordered by the Pacific Ocean to the east, Cagayan Valley to the northwest, Central Luzon to the midwest, and Calabarzon to the southwest. Some communities east of the mountain range, along the coast, are less developed and so remote that they could only be accessed by taking a plane or a boat.
The Quirino Protected Landscape is a protected area in the Philippine island of Luzon that covers a large portion of the province of Quirino. It was established in 2004 to preserve the watershed area containing the headwaters of the Cagayan River, also known as the Rio Grande de Cagayan, which supports major irrigation systems in the entire Cagayan Valley region. From an initial area of 206,875.41 hectares, the protected area now forms a total aggregate area of 175,943.62 hectares divided into three parcels after a 2005 amendment opened up a few areas to mining. It is a key biodiversity area of the Sierra Madre Biodiversity Corridor.