Calabarzon babbler | |
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Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Aves |
Order: | Passeriformes |
Family: | Zosteropidae |
Genus: | Sterrhoptilus |
Species: | S. affinis |
Binomial name | |
Sterrhoptilus affinis (McGregor, 1907) | |
The Calabarzon babbler (Sterrhoptilus affinis) is a species of bird in the family Zosteropidae. It is endemic to the Philippines found in the island of Luzon. Contrary to its name, it is also found outside the Calabarzon region where it also inhabits Central Luzon, Bicol Peninsula and Catanduanes. Its natural habitat is tropical moist lowland forest. It previously was considered a subspecies of the black-crowned babbler (Sterrhoptilus nigrocapitatus). [1]
EBird describes it as "A fairly small bird of lowland and foothill forest and edge. Has a gray back and cheek with fine pale streaks, dark wings and tail with white outer tail feathers, white underparts, a pale rufous throat, and a black crown. Note the slender black bill. Often joins mixed-species flocks and sometimes hangs upside down while feeding. Somewhat similar to green-backed whistler, especially from below, but smaller, with a pale rufous throat and a black crown. Voice includes a medium-pitched 'poo piuu!' with the second note downslurred." [2] This species is monotypic.
The golden-crowned babbler has been known to interbreed with the Calabarzon babbler in areas where their range overlaps. [3]
It was formerly conspecific with the Visayan babbler but is differentiated by it is differentiated from its southern counterpart by having a more intense orange chin and olive-toned upper parts. Its validity as a species were also further validated by sequencing its mitochodrial DNA. [4]
Diet is assumed to primarily be insects, berries and vegetable matter. They are spotted foraging alone, in pairs or in mixed flocks with other species. [5] like Blue-headed fantail, Rufous paradise flycatcher, Lemon-throated leaf warbler, Yellow-wattled bulbul, white-eyes, sunbirds and flowerpeckers. Forages in all levels but is usually seen in the understorey where it methodically gleans on leaves searching for insects.
Breeding season is believed to from April to July, which is the general breeding season for most Philippine forest birds. One nest was found that was cup shaped made out of moss and woven together with roots with small twigs just one meter above the ground. This nest contained 3 eggs but this single nest is not enough to assume average clutch. [4]
It is found in lowland and foothill forest, second growth and forest edge until 1,140 meters above sea level.
The International Union for Conservation of Nature still recognizes the Black-crowned babbler as a single species which is assessed as least concern. This specis is believed to be on the decline. This species' main threat is habitat loss with wholesale clearance of forest habitats as a result of logging, agricultural conversion and mining activities occurring within the range.
There are currently no targeted conservation plans for the species. It does occur in the protected areas in Quezon Protected Landscape, Bicol Natural Park, Bulusan Volcano Natural Park and the Angat Watershed Forest Reserve but enforcement from loggers and hunters is still lax. [6]
The Mindanao hornbill, also known as the Mindanao tarictic hornbill, is a medium-small species of hornbill found in the canopy of rainforests on Mindanao, Dinagat, Siargao and Basilan in the southern Philippines. All five Philippine tarictics we're once considered a single species. It is declining due to habitat destruction, hunting and the illegal wildlife trade.
The blue-headed fantail is a fantail endemic to the northern Philippines where it is found on the islands of Luzon and Catanduanes. Until recently, it was considered conspecific with the Tablas fantail and Visayan fantail.
The Samar hornbill is a species of hornbill in the family Bucerotidae. It is found in forests on the islands of Samar, Calicoan, Leyte and Bohol in the east-central Philippines. As is the case with all Philippine tarictic hornbills, it has been considered a subspecies of Visayan hornbill Alternatively, it is considered a subspecies of Mindanao hornbill.
The blue-breasted blue flycatcher, also known as the blue-breasted flycatcher, is a species of bird in the family Muscicapidae. It is endemic to the Philippines found only north and central parts of Luzon. Its natural habitat is tropical moist lowland forests. The Rufous-breasted blue flycatcher was formerly considered to be a subspecies.
The celestial monarch is a species of bird in the family Monarchidae, and one of the most attractive of all the monarch flycatchers. It is identified as a turquoise blue bird with a long and spectacular cerulean 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.Its natural habitat is tropical moist lowland forests up to 750 masl. There is an unverified report of this bird in 2024 in Leyte. It is one of the most sought after birds by birdwatchers in the Philippines and in the world.
The short-crested monarch is a species of bird in the family Monarchidae and one of the most attractive of all the monarch flycatchers. It is a brilliant ultramarine blue bird with the males having a black facial markings with an electric blue eyering and a short crest contrasted with a pearly white belly. It is endemic to the Philippines found on the islands of Luzon, Camiguin Norte, Polilio, Catanduanes, Samar, Dinagat and Mindanao. It is found in tropical moist lowland forest. It is threatened by habitat loss. It is one of the most sought after birds among birdwatchers.
The brown tit-babbler is a species of bird in the family Timaliidae. It is endemic to the Philippines. Its natural habitats are tropical moist lowland forest and or tropical moist montane forest.
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.s natural habitat is tropical moist lowland forests. It was formerly conspecific and forms a species complex with the Bicol ground warbler and Sierra Madre ground warbler, which are some of most elusive birds in the country due to their extremely shy nature. Among these three elusive species, the Cordillera ground warbler is the rarest and most threatened. It has only been photographed once in the wild.It is threatened by habitat loss.
The yellow-bellied whistler, or Philippine whistler, is a species of bird in the family Pachycephalidae that is endemic to the Philippines. Its natural habitats are tropical moist lowland forest and the lower reaches tropical moist montane forest.
The rusty-crowned babbler is a species of bird in the family Zosteropidae. It is native to the southern Philippines on the islands of Mindanao and Dinagat Islands and Basilan. Its natural habitat is tropical moist lowland forest.
The golden-crowned babbler is a species of bird in the family Zosteropidae. It is endemic to the Philippines found only in the moist tropical forest in Northern Luzon. It is threatened by habitat loss.
The Palawan striped babbler is a species of bird in the family Zosteropidae. It is one of the four striped babblers along with the Negros striped babbler, Panay striped babbler and Luzon striped babbler. It is endemic to the Philippines, where it is only found in Palawan. Its natural habitat is tropical moist montane forest. It is threatened by habitat loss.
The Visayan babbler also known as the Visayan Black-crowned Babbler. is a species of bird in the family Zosteropidae. It is endemic to the Philippines. It is found on Samar, Leyte and Bohol. Its natural habitat is tropical moist lowland forest. It was formerly conspecific to the northern population of the Calabarzon black-crowned babbler but has since been split as a species due to differences in its yellowish throat and whiter belly.
The Mindanao pygmy babbler is a bird species endemic to the Philippines. It had been placed in the family Timaliidae, but it is a close relative of the white-eyes, however, and many taxonomists now place it in the family Zosteropidae..
The Luzon striped babbler is a species of bird in the family Zosteropidae. It is one of the four striped babblers along with the Negros striped babbler, Panay striped babbler and Palawan striped babbler. It is endemic to the Philippines, where it is only found in northern Luzon and in Bataan. Its natural habitat is tropical moist lowland forest. It is threatened by habitat loss.
The rufous paradise flycatcher is a species of bird in the family Monarchidae. It is found in Indonesia and the Philippines. Its natural habitat is tropical moist lowland forests.
The yellowish white-eye or golden-yellow white-eye, is a species of bird in the family Zosteropidae. It is endemic to the Philippines. Its natural habitat is tropical moist lowland forests.
The Visayan pygmy babbler is a bird species endemic to the Philippines on the islands of Leyte and Samar. It was conspecific with the Mindanao pygmy babbler under the common name of "pygmy babbler".Its natural habitats are tropical moist lowland forests and or tropical moist montane forests.
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. It was formerly conspecific and forms a species complex with the Cordillera ground warbler and Sierra Madre ground warbler, which are some of most elusive birds in the country due to their extremely shy nature. Its natural habitat is tropical moist lowland forest. It is threatened by habitat loss.
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. It was formerly conspecific and forms a species complex with the Cordillera ground warbler and Bicol ground warbler, which are some of most elusive birds in the country due to their extremely shy nature.While not officially threatened, its population is said to be declining due to habitat destruction through deforestation.