The cinnamon ibon (''Hypocryptadius cinnamomeus'') is a species of

bird Birds are a group of warm-blooded vertebrates constituting the class (biology), class Aves (), characterised by feathers, toothless beaked jaws, the Oviparity, laying of Eggshell, hard-shelled eggs, a high Metabolism, metabolic rate, a fou ...

endemic Endemism is the state of a species being found only 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 foun ...

to the mountains of

Mindanao Mindanao ( ) is the List of islands of the Philippines, second-largest island in the Philippines, after Luzon, and List of islands by population, seventh-most populous island in the world. Located in the southern region of the archipelago, the ...

in the

Philippines The Philippines, officially the Republic of the Philippines, is an Archipelagic state, archipelagic country in Southeast Asia. Located in the western Pacific Ocean, it consists of List of islands of the Philippines, 7,641 islands, with a tot ...

Monotypic In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unisp ...

within the genus ''Hypocryptadius'', it is classified as an

old world sparrow Old World sparrows are a group of small passerine birds forming the family (biology), family Passeridae. They are also known as true sparrows, a name also used for a particular genus of the family, ''Passer''. They are distinct from both the New ...

. Its natural

habitat In ecology, habitat refers to the array of resources, biotic factors that are present in an area, such as to support the survival and reproduction of a particular species. A species' habitat can be seen as the physical manifestation of its ...

is tropical moist

montane forest Montane ecosystems are found on the slopes of mountains. The alpine climate in these regions strongly affects the ecosystem because temperatures lapse rate, fall as elevation increases, causing the ecosystem to stratify. This stratification is ...

s and mossy forests above .

Description and taxonomy

EBird eBird is an online database of bird observations providing scientists, researchers and amateur naturalists with real-time data about bird distribution and abundance. Originally restricted to sightings from the Western Hemisphere, the project e ...

describes the bird as "A fairly small to medium-sized bird . Bright cinnamon on the crown and back with darker wings and tail, a pale orange throat, chest, and sides, and white on the belly and under the base of the tail. Note the red eye and the silver-gray legs and bill. Often found in mixed-species flocks. No similar species in range. Voice is a mixture of high-pitched squeals, a sharp nasal 'wik', and a forceful, medium-pitched 'piii! piuu-piuu!' with the final notes downslurred."

within the genus ''Hypocryptadius'', it is classified as a sparrow after being tentatively placed in the white-eye

family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...

Zosteropidae The white-eyes are a family, Zosteropidae, of small passerine birds native to tropical, subtropical and temperate Sub-Saharan Africa, southern and eastern Asia, and Australasia. White-eyes inhabit most tropical islands in the Indian Ocean, the ...

. It has a skull and bill similar to that of the sparrows, and following a study of its

mitochondrial A mitochondrion () is an organelle found in the cells of most eukaryotes, such as animals, plants and fungi. Mitochondria have a double membrane structure and use aerobic respiration to generate adenosine triphosphate (ATP), which is used ...

and

nuclear DNA Nuclear DNA (nDNA), or nuclear deoxyribonucleic acid, is the DNA contained within each cell nucleus of a eukaryotic organism. It encodes for the majority of the genome in eukaryotes, with mitochondrial DNA and plastid DNA coding for the rest. ...

as well as skeletal evidence,

Jon Fjeldså Jon Fjeldså (born 13 December 1942) is a Norwegian-born Danish ornithologist and bird artist. Fjeldså has authored several books and published numerous research papers, primarily focusing on grebes, birds of the Andes and Eastern Arc Mountains, an ...

and colleagues placed the species as the most basal member of that family and a distinct

subfamily In biological classification, a subfamily (Latin: ', plural ') is an auxiliary (intermediate) taxonomic rank, next below family but more inclusive than genus. Standard nomenclature rules end botanical subfamily names with "-oideae", and zo ...

Ecology and behavior

Forages in the understory for insects and often joins mixed-species flocks that include Black-and-cinnamon fantail, Little pied flycatcher, Turquoise flycatcher, Negros leaf warbler and other small birds. Nothing has been published about its breeding behaviour. Birds in breeding condition and enlarged gonads have been collected in February to May.

Habitat and conservation status

Its habitat is in tropical moist montane and sub-montane mossy forests and

forest edge A woodland edge or forest edge is the transition zone (ecotone) from an area of woodland or forest to fields or other open spaces. Certain species of plants and animals are adapted to the forest edge, and these species are often more familiar to h ...

above 1,000 meters above sea level. IUCN has assessed this bird as a

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

. While it has a limited range, it is supposedly common in areas it is found. However, the population is said to be decreasing. This is due to

habitat loss Habitat destruction (also termed habitat loss or habitat reduction) occurs when a natural habitat is no longer able to support its native species. The organisms once living there have either moved elsewhere, or are dead, leading to a decrease ...

due to legal and

illegal logging Illegal logging is the harvest, transportation, purchase, or sale of timber in violation of laws. The harvesting procedure itself may be illegal, including using corrupt means to gain access to forests; extraction without permission, or from a p ...

mining Mining is the Resource extraction, extraction of valuable geological materials and minerals from the surface of the Earth. Mining is required to obtain most materials that cannot be grown through agriculture, agricultural processes, or feasib ...

and conversion into farmlands through

Slash-and-burn Slash-and-burn agriculture is a form of shifting cultivation that involves the cutting and burning of plants in a forest or woodland to create a Field (agriculture), field called a swidden. The method begins by cutting down the trees and woody p ...

or other methods.

References

External links

Cinnamon Ibon media
on the Internet Bird Collection
Video of a Cinnamon Ibon nesting
by Don Roberson cinnamon ibon Birds of Mindanao cinnamon ibon Taxonomy articles created by Polbot {{Passeridae-stub