The guaiabero (''Bolbopsittacus lunulatus'') is a species of

parrot Parrots, also known as psittacines (), are birds of the roughly 398 species in 92 genera comprising the order Psittaciformes (), found mostly in tropical and subtropical regions. The order is subdivided into three superfamilies: the Psittacoide ...

in the family

Psittaculidae Psittaculidae is a family containing Old World parrots. It consists of five subfamilies: Agapornithinae, Loriinae, Platycercinae, Psittacellinae and Psittaculinae. This family has been accepted into '' The Clements Checklist of Birds of the W ...

, belonging to the

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 "unispe ...

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nom ...

''Bolbopsittacus'' and closely related to the lovebirds (''

Agapornis Lovebird is the common name for the genus ''Agapornis'', a small group of parrots in the Old World parrot family Psittaculidae. Of the nine species in the genus, all are native to the African continent, with the grey-headed lovebird being nati ...

'') and

hanging parrot Hanging parrots are birds in the genus ''Loriculus'', a group of small parrots from tropical southern Asia. About long, hanging parrots are mostly green plumaged and short-tailed. Often head coloring helps to identify individual species. They a ...

s ('' Loriculus''). 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 else ...

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 ...

and locally known as ''bubutok''. Its common name is derived from its reputation for eating

guava Guava () is a common tropical fruit cultivated in many tropical and subtropical regions. The common guava ''Psidium guajava'' (lemon guava, apple guava) is a small tree in the myrtle family ( Myrtaceae), native to Mexico, Central America, t ...

Description

Measuring around in length, it is a smallish, stout parrot with a large bill and stubby tail. The sexes differ in plumage. The adult male is green overall, with more yellowish underparts and a pale blue face and collar and wing primaries. The rump is yellow-green. The bill is grey-blue and with a darker tip, and the eyes dark brown. The adult female is also greenish, with a yellow collar and less blue on the face. It has black crescent markings on the nape and rump. Its bill is paler grey.

Behaviour

It inhabits lowland forests and adjacent cleared country. It is a predominantly fruit eating parrot, and has been recorded near fruit trees such as mangos. The breeding habits in the wild remained virtually unknown until a few years ago, but based on recent observations it appears to nest in a self-excavated cavity inside an

arboreal Arboreal locomotion is the locomotion of animals in trees. In habitats in which trees are present, animals have evolved to move in them. Some animals may scale trees only occasionally, but others are exclusively arboreal. The habitats pose nu ...

ant nest or

termitaria Termites are small insects that live in colonies and have distinct castes ( eusocial) and feed on wood or other dead plant matter. Termites comprise the infraorder Isoptera, or alternatively the epifamily Termitoidae, within the order Blat ...

.Rosell II, N. T. B, Ocon, R., Mallari, C. S., & Mapua, I. (2007). ''Three nests of the Guaiabero Bolbopsittacus lunulatus.'' BirdingASIA 8: 74-76. BolbopsittacusIntermediusKeulemans

Taxonomy

The guaiabero was first described as ''Psittacus lunulatus'' by

Tyrol Tyrol (; historically the Tyrole; de-AT, Tirol ; it, Tirolo) is a historical region in the Alps - in Northern Italy and western Austria. The area was historically the core of the County of Tyrol, part of the Holy Roman Empire, Austrian Emp ...

ean naturalist

Giovanni Antonio Scopoli Giovanni Antonio Scopoli (sometimes Latinized as Johannes Antonius Scopolius) (3 June 1723 – 8 May 1788) was an Italian physician and naturalist. His biographer Otto Guglia named him the "first anational European" and the " Linnaeus of the A ...

in 1786. The only member of its genus, it is distinctive. Four

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 specie ...

have been recognised. The nominate race ''lunulatus'' occurs on

Luzon Luzon (; ) is the largest and most populous island in the Philippines. Located in the northern portion of the Philippines archipelago, it is the economic and political center of the nation, being home to the country's capital city, Manila, as ...

, birds on

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 ...

are darker with a more distinctive blue collar and some purple-tinge on the face and classified as subspecies ''intermedius'', those on

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 ...

and Panaon have greener cheeks and are classified as subspecies ''mindanensis'', and finally those on

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 ...

are similar to the Leyte subspecies, but with a more yellow tone overall and classified as ''callainipictus''.

References

External links

Oriental Bird Images: ''Guaiabero''
Selected photos {{Taxonbar, from=Q286299 Psittacidae Endemic birds of the Philippines Birds described in 1786 B Taxonomy articles created by Polbot