The Mindanao bleeding-heart (''Gallicolumba crinigera''), also known as Bartlett's bleeding heart dove, Barlett's bleeding heart pigeon and the hair-breasted bleeding heart, is a species of

bird Birds are a group of warm-blooded vertebrates constituting the class Aves (), characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweigh ...

in the

pigeon Columbidae () is a bird family consisting of doves and pigeons. It is the only family in the order Columbiformes. These are stout-bodied birds with short necks and short slender bills that in some species feature fleshy ceres. They primarily ...

family Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...

. It is

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsew ...

to the

Philippines The Philippines (; fil, Pilipinas, links=no), officially the Republic of the Philippines ( fil, Republika ng Pilipinas, links=no), * bik, Republika kan Filipinas * ceb, Republika sa Pilipinas * cbk, República de Filipinas * hil, Republ ...

on the islands of

Mindanao Mindanao ( ) ( Jawi: مينداناو) is the second-largest island in the Philippines, after Luzon, and seventh-most populous island in the world. Located in the southern region of the archipelago, the island is part of an island group of ...

Basilan Basilan, officially the Province of Basilan ( cbk, Provincia de Basilan; yka, Wilayah Basilanin; tsg, Wilaya' sin Basilan; fil, Lalawigan ng Basilan), is an island province of the Philippines located primarily in the Bangsamoro Autonomous Reg ...

Samar Samar ( ) is the third-largest and seventh-most populous island in the Philippines, with a total population of 1,909,537 as of the 2020 census. It is located in the eastern Visayas, which are in the central Philippines. The island is divided in ...

Leyte Leyte ( ) is an island in the Visayas group of islands in the Philippines. It is eighth-largest and sixth-most populous island in the Philippines, with a total population of 2,626,970 as of 2020 census. Since the accessibility of land has be ...

and

Bohol Bohol (), officially the Province of Bohol ( ceb, Lalawigan sa Bohol; tl, Lalawigan ng Bohol), is an island province of the Philippines located in the Central Visayas Regions of the Philippines, region, consisting of the island itself and 75 m ...

. It is so named because of a red blotch on its breast. The generic name derives from a fusion of the

Latin Latin (, or , ) is a classical language belonging to the Italic branch of the Indo-European languages. Latin was originally a dialect spoken in the lower Tiber area (then known as Latium) around present-day Rome, but through the power of the ...

''gallus'' ("chicken") and ''columba'' ("pigeon").

Description and taxonomy

The Mindanao bleeding-heart is about 29 cm in length and weighs 184–204 g. The forehead, crown, nape and mantle are metallic green, slightly duller on the forehead and sides of the head. The back to rump is a chocolate brown with fringes of green. The upper and central tail

coverts A covert feather or tectrix on a bird is one of a set of feathers, called coverts (or ''tectrices''), which, as the name implies, cover other feathers. The coverts help to smooth airflow over the wings and tail. Ear coverts The ear coverts are s ...

are purplish brown, the chin and throat are white. Most striking is a blood red patch on the breast, hence the common name. The lower breast to the undertail is a rusty orange that is its darkest on the breast and flanks and palest on the belly. The underwing is chestnut brown and blackish on the edges. The wing shield is a dull brown with broad tips which make three distinct wing bars. The sexes are similar in appearance though there may be some dimorphism in iris colouration. Juveniles are dark chestnut or reddish brown with some metallic fringes on the mantle and scapular.

Subspecies

Three

subspecies In biological classification, subspecies is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (morphology), but that can successfully interbreed. Not all species ...

are recognized: * ''Gallicolumba crinigera cringera''- Found on

and

Dinagat Islands Dinagat Islands (Cebuano language, Cebuano: ''Mga Pulo sa Dinagat''; Surigaonon language, Surigaonon: ''Mga Puyo nan Dinagat''; Kabalian language, Kabalian: ''Mga Puyo san Dinagat''; Waray language, Waray: ''Mga Purô han Dinagat''; Filipino lang ...

; white throat and upper breast, light brown on the lower breast * ''Gallicolumba crinigera bartletti''- Found on

; Similar to nominate but smaller with a fine bill * ''Gallicolumba crinigera leytensis'' -: Found on

and

; upper and lower breast dark green;

Behaviour

It is a shy bird which typically runs from danger, spending most of its time on the forest floor, and only flying short distances if flushed. It only perches in trees if frightened or when nesting or roosting. The call is a repeated woo-oo similar to that of most doves and pigeons. It is a rare sight because of its cryptic behaviour.

Breeding

Courtship is characterized by slowly raising and lowering the wings at regular intervals of a few seconds. The female lays a single creamy white egg, which it will incubate for 15–18 days (depending on the weather) and the young are capable of flight within 15–16 days of hatching. The breeding period is thought to take place during the rainy season (March through June).

Feeding

The birds feed on the forest floor, foraging for berries, seeds, worms and insects. In captivity they are typically fed grains, greens and parakeet seed.

Distribution and habitat

The Mindanao bleeding-heart exists (or used to exist) on the Philippine Islands of

, and Dinagat. It is one of the three bleeding-heart doves that are native to their own particular island or islands of the Philippines. It naturally occurs in both primary and secondary tropical lowland rainforests up to an elevation of 750 m.

Conservation status

The main threats to the Mindanao bleeding-heart are deforestation and overhunting for food and for the pet trade. The status of the species is not sufficiently known for a definite assessment. Initially listed as being of

least concern A least-concern species is a species that has been categorized by the International Union for Conservation of Nature (IUCN) as evaluated as not being a focus of species conservation because the specific species is still plentiful in the wild. T ...

in 1988, it was subsequently uplisted to vulnerable in 1994, and further to

endangered An endangered species is a species that is very likely to become extinct in the near future, either worldwide or in a particular political jurisdiction. Endangered species may be at risk due to factors such as habitat loss, poaching and inva ...

in 2000. With its exact rate of decline still unresolved, it was downlisted to vulnerable in the 2007

IUCN Red List The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is the world's most comprehensive inventory of the global conservation status of biol ...

with the population estimated at 1,000 to 2,499 mature individuals remaining. This species' main threat is

habitat loss Habitat destruction (also termed habitat loss and habitat reduction) is the process by which a natural habitat becomes incapable of supporting its native species. The organisms that previously inhabited the site are displaced or dead, thereby ...

with wholesale clearance of forest habitats as a result of logging, agricultural conversion and mining activities occurring within the range. Forest cover was estimated at just 29% on Mindanao, and as little as 433 km² of old-growth

dipterocarp Dipterocarpaceae is a family of 16 genera and about 695 known species of mainly tropical lowland rainforest trees. The family name, from the type genus ''Dipterocarpus'', is derived from Greek (''di'' = two, ''pteron'' = wing and ''karpos'' = fru ...

forest remained on

and

. These figures are continuing to decline thanks to continued deforestation. Conservation actions proposed include to survey in remaining tracts of suitable habitat and areas with historical records, particularly on

and

. Continue to advocate the effective protection of key sites and potential habitat. Propose remaining forests found to support the species for establishment as protected areas. Promote more effective enforcement of laws relating to hunting and trapping.

References

External links

ISIS Isis (; ''Ēse''; ; Meroitic: ''Wos'' 'a''or ''Wusa''; Phoenician: 𐤀𐤎, romanized: ʾs) was a major goddess in ancient Egyptian religion whose worship spread throughout the Greco-Roman world. Isis was first mentioned in the Old Kingd ...

(2008)
''Gallicolumba criniger bartletti'' held at ISIS-registered institutions
Retrieved 2008-10-23.
ArkiveBirdLife InternationalMemphis Zoo Society Docents
{{Taxonbar, from=Q809443

Mindanao bleeding-heart The Mindanao bleeding-heart (''Gallicolumba crinigera''), also known as Bartlett's bleeding heart dove, Barlett's bleeding heart pigeon and the hair-breasted bleeding heart, is a species of bird in the pigeon family. It is endemic to the Philippi ...

Birds of Mindanao Vulnerable fauna of Asia

Taxonomy articles created by Polbot Taxa named by Ludwig Reichenbach