Spiderhunter

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Spiderhunters
Little spiderhunter India.jpg
Little spiderhunter
Arachnothera longirostra
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Passeriformes
Family: Nectariniidae
Genus: Arachnothera
Temminck, 1826
Type species
Nectarinia chrysogenys [1]
Temminck, 1826
Species

See text.

The spiderhunters are birds of the genus Arachnothera, part of the sunbird family Nectariniidae. The genus contains thirteen species found in the forests of south and southeastern Asia. They are large representatives of the sunbird family, with drab plumage and long strongly curved bills. They feed on both nectar and a range of small arthropods.

Contents

Distribution and habitat

Unlike the rest of the family, which is more widespread, the spiderhunters are confined to the Oriental zoogeographic region, occurring from India east to the Philippines and from the Himalayas south to Java; they reach their greatest species diversity in the Thai-Malay peninsula, Sumatra and Borneo. [2] The spiderhunters are mostly forest birds, occupying a wide range of forest types including true rainforest, dipterocarp forest, swamp forest, bamboo forest, secondary forest, forest edge and other highly degraded forest. In addition several species occur in human-created habitat such as gardens or plantations. Most species are lowland species, but the Whitehead's spiderhunter is more of a montane species.

Description

A streaked spiderhunter about to feed on a banana palm inflorescence Arachnothera magna - Kaeng Krachan.jpg
A streaked spiderhunter about to feed on a banana palm inflorescence

The spiderhunters are amongst the largest of their family, measuring between 13 and 22 cm (5.1 and 8.7 in) in length. The spectacled spiderhunter is the heaviest of the sunbirds, weighing as much as 49 g (1.7 oz). The bills of the spiderhunters are long, at least twice the length of the head, and are decurved and stout. The tongue forms a complete tube for most of its length. The plumage is much drabber than the other brightly coloured sunbirds, is the same for both sexes, and contains no iridescence. The uppersides of most species are olive-green and the undersides dull white or yellow - in half the species the undersides are streaked. The most atypical spiderhunter plumage is that of the Whitehead's spiderhunter, which is dark brown with white streaking on the undersides and back and a yellow rump. [2]

The calls of the spiderhunters are very simple, typically a metallic chip which is repeated multiple times to form the song. The song of the little spiderhunter is described as an "incessant squeaky whistle". [2]

Diet and feeding

This streaked spiderhunter has pierced the side of a closed hibiscus flower and is drinking the nectar without pollinating the flower - a tactic known as nectar robbing. Nectar robbing.jpg
This streaked spiderhunter has pierced the side of a closed hibiscus flower and is drinking the nectar without pollinating the flower - a tactic known as nectar robbing.

The spiderhunters are omnivorous. As their name suggests they will eat spiders, and are capable of extracting spiders from the centre of their webs, a tricky task. They also consume a wide range of other small arthropod prey including crickets, caterpillars, butterflies, ants and other insects. In addition to animal prey they also consume nectar from flowers. Their tubular tongue is pushed against the top of the upper mandible of the bill, then pulled in and out, creating a pressure difference which allows the nectar to be sucked into the mouth. [2] Spiderhunters may be important pollinators of some species of plants, and species pollinated by spiderhunters have long tubular flowers. [3] They may also participate in nectar robbing, which consists of inserting the bill into the side of the flower to extract nectar without being dabbed with pollen. Little is known about their territorial behaviour, but there have been reports of some species defending territories. The spiderhunters are less gregarious than other sunbirds, and are usually seen alone or as part of a pair. [2]

Breeding

The spiderhunters are thought to be monogamous like most of the rest of the family. They vary from the other sunbirds in the nature of their nest, which is suspended underneath a large leaf, usually a banana leaf but sometimes a palm frond or even a branch. The style of nest can be quite variable, a simple cup in the case of the streaked spiderhunter, an elongated tube for the yellow-eared spiderhunter and a bottle shape for the long-billed spiderhunter. The nests are suspended from the leaf by using spider web or by pushing plant fibres through the leaf. The nests are made of grasses and leaves and lined with soft materials. Nest construction, as is typical of the family, is carried out by the female alone. Unlike the other sunbirds, however, both the male and female incubate the eggs. The spiderhunters lay two or three eggs. Their nests are sometimes parasitised by cuckoos. [2]

Species

The genus contains 13 species: [4]

ImageCommon NameScientific nameDistribution
SpiderhunterSabah.jpg Little spiderhunter Arachnothera longirostraBangladesh, Bhutan, Brunei, Cambodia, China, India, Indonesia, Laos, Malaysia, Myanmar, Nepal, Philippines, Thailand, and Vietnam.
Orange-tufted spiderhunter Arachnothera flammiferaPhilippines.
PALE SPIDERHUNTER (cropped).jpg Pale spiderhunter Arachnothera dilutiorPalawan.
Thick-billed spiderhunter Arachnothera crassirostrisBrunei, Indonesia, Malaysia, Singapore, and Thailand.
Long-billed spiderhunter Arachnothera robustaBrunei, Indonesia, Malaysia, and Thailand.
Spectacled-spiderhunter.jpg Spectacled spiderhunter Arachnothera flavigasterBrunei, Indonesia, Malaysia, Singapore, Thailand, and Vietnam.
Yellow-eared Spiderhunter (14080068385).jpg Yellow-eared spiderhunter Arachnothera chrysogenysBrunei, Indonesia, Malaysia, Myanmar, Singapore, Thailand, and Vietnam.
Naked-faced spiderhunter.jpg Naked-faced spiderhunter Arachnothera claraePhilippines.
Arachnothera modesta, Grey-breasted spiderhunter - Khao Sok National Park (21324789981).jpg Grey-breasted spiderhunter Arachnothera modestaBrunei, Indonesia, Malaysia, Myanmar, Singapore, Thailand, and Vietnam.
Streaky-breasted Spiderhunter - Carita - West Java, Indonesia (cropped).jpg Streaky-breasted spiderhunter Arachnothera affinisJava and Bali
Bornean spiderhunter Arachnothera everettiBorneo.
Streaked Spiderhunter (Arachnothera magna) - Flickr - Lip Kee.jpg Streaked spiderhunter Arachnothera magnaBangladesh, Bhutan, Cambodia, China, India, Laos, Malaysia, Myanmar, Nepal, Thailand, and Vietnam.
Arachnothera juliae 102416853 (cropped).jpg Whitehead's spiderhunter Arachnothera juliaeBorneo

Related Research Articles

<span class="mw-page-title-main">Sunbird</span> Family of birds

Sunbirds and spiderhunters make up the family Nectariniidae of passerine birds. They are small, slender passerines from the Old World, usually with downward-curved bills. Many are brightly coloured, often with iridescent feathers, particularly in the males. Many species also have especially long tail feathers. Their range extends through most of Africa to the Middle East, South Asia, South-east Asia and southern China, to Indonesia, New Guinea and northern Australia. Species diversity is highest in equatorial regions.

<span class="mw-page-title-main">Purple sunbird</span> Species of bird

The purple sunbird is a small bird in the sunbird family found mainly in South and Southeast Asia but extending west into parts of the Arabian peninsula. Like other sunbirds they feed mainly on nectar, although they will also take insects, especially when feeding young. They have a fast and direct flight and can take nectar by hovering like a hummingbird but often perch at the base of flowers. The males can appear all black in harsh sunlight but the purple iridescence is visible on closer observation or under good light conditions. Females are olive above and yellowish below.

<span class="mw-page-title-main">Purple-rumped sunbird</span> Species of bird

The purple-rumped sunbird is a sunbird endemic to the Indian Subcontinent. Like other sunbirds, they are small in size, feeding mainly on nectar but sometimes take insects, particularly when feeding young. They can hover for short durations but usually perch to lap nectar from flowers. They build a hanging pouch nest made up of cobwebs, lichens and plant material. Males are contrastingly coloured but females are olive above and yellow to buff below. Males are easily distinguished from the purple sunbird by the light coloured underside while females can be told apart from males by their whitish throats.

<span class="mw-page-title-main">Crimson-backed sunbird</span> Species of bird

The crimson-backed sunbird or small sunbird is a sunbird endemic to the Western Ghats of India. Like other sunbirds, they feed mainly on nectar although they take insects, especially to feed their young. They are tiny birds that are resident and are found in forests but are particularly attracted to gardens at the edge of the forest where people grow suitable flower-bearing plants. They usually perch while taking nectar.

<span class="mw-page-title-main">Loten's sunbird</span> Species of bird

Loten's sunbird, also known as the long-billed sunbird or maroon-breasted sunbird, is a sunbird endemic to peninsular India and Sri Lanka. Named after Joan Gideon Loten, who was the Dutch governor of colonial Ceylon, it is very similar to the purple sunbird that is found in the same areas and also tends to hover at flowers for nectar, but can be distinguished by the longer bill, the maroon band on the breast and brownish wings. Like other sunbirds, it is also insectivorous and builds characteristic hanging nests.

<span class="mw-page-title-main">Seychelles sunbird</span> Species of bird

The Seychelles sunbird is a small passerine from the sunbird family. It is named after the French explorer Jean-Jacques Dussumier. It is native to the Seychelles, where it is known as kolibri in Seychellois Creole. This bird is placed in the genus Cinnyris by some authorities and in Nectarinia by others. Although this bird has a limited range, it is described as common and has a stable population, so the International Union for Conservation of Nature has rated its conservation status as being of "least concern".

<span class="mw-page-title-main">Orange-breasted sunbird</span> Species of bird

The orange-breasted sunbird is a species of small, predominantly nectar-feeding bird that is endemic to the fynbos shrubland biome of southwestern South Africa. It is the only member of the genus Anthobaphes, in the family Nectariniidae, though it is sometimes placed in the genus Nectarinia. The birds are sexually dimorphic, with females being olive green while the males are orange to yellow on the underside with bright green, blue and purple on the head and neck.

<span class="mw-page-title-main">Malachite sunbird</span> Species of bird

The malachite sunbird is a small nectarivorous bird found from the highlands of Ethiopia southwards to South Africa. They pollinate many flowering plants, particularly those with long corolla tubes, in the Fynbos.

<span class="mw-page-title-main">Whitehead's spiderhunter</span> Species of bird endemic to Borneo

Whitehead's spiderhunter is a species of spiderhunter in the sunbird and spiderhunter family Nectariniidae. It is endemic to Borneo, where it is found in the mountain ranges in the north-central part of the island. It inhabits hill dipterocarp forest, primary and secondary montane forest, and forest edge at elevations of 930–3,000 m (3,050–9,840 ft). A large and distinctive spiderhunter, the species is mostly brown with profuse whitish streaking all over the body and bright yellow vents and uppertail coverts. Both sexes are similar in appearance, but males are larger, with a length of 16.5–18 cm (6.5–7.1 in) compared to a length of 15.5–16.5 cm (6.1–6.5 in) for females. The juvenile plumage is unknown.

<span class="mw-page-title-main">Little spiderhunter</span> Species of bird

The little spiderhunter is a species of long-billed nectar-feeding bird in the family Nectariniidae found in the moist forests of South and Southeast Asia. Unlike typical sunbirds, males and females are very similar in plumage. They are usually seen in ones or twos and frequently make a tzeck call. They are most often found near flowering plants where they obtain nectar.

<span class="mw-page-title-main">Streaked spiderhunter</span> Species of bird

The streaked spiderhunter is a species of bird in the family Nectariniidae.

<span class="mw-page-title-main">Purple-naped spiderhunter</span> Species of bird

The purple-naped spiderhunter or purple-naped sunbird is a species of bird in the family Nectariniidae. It is the only species in the genus Kurochkinegramma. It is found in Southeast Asia from Myanmar to Sumatra and Borneo. Its natural habitat is subtropical or tropical moist lowland forests.

<span class="mw-page-title-main">Bates's sunbird</span> Species of bird

Bates's sunbird is a species of sunbird in the family Nectariniidae which occurs in Western African forests and Central African rainforests, and locally in other types of forest in Central Africa.

<span class="mw-page-title-main">Copper-throated sunbird</span> Species of bird

The copper-throated sunbird is a small passerine within the Nectariniidae family. They sustain themselves by consuming nectar as well as small invertebrates. As a member of the Nectariniidae family, they possess downward curved beaks and have pectoral tufts of yellow feathers. They are found in south-eastern Asia, predominantly in coastal regions.

<span class="mw-page-title-main">Olive-bellied sunbird</span> Species of bird

The olive-bellied sunbird is a species of bird in the family Nectariniidae. It is widely spread across African tropical rainforest.

<span class="mw-page-title-main">Bronzy sunbird</span> Species of bird

The bronzy sunbird is a species of bird in the family Nectariniidae. They are located mostly in parts of southern Africa.

<span class="mw-page-title-main">Golden-winged sunbird</span> Species of bird

The golden-winged sunbird is a species of bird in the family Nectariniidae. Three subspecies are recognised. It is found in Democratic Republic of the Congo, Kenya, Tanzania, and Uganda.

Hofmann's sunbird is a species of bird in the family Nectariniidae. It is endemic to eastern Tanzania.

References

  1. "Nectariniidae". aviansystematics.org. The Trust for Avian Systematics. Retrieved 2023-07-16.
  2. 1 2 3 4 5 6 Cheke, Robert; Mann, Clive (2008). "Family Nectariniidae (Sunbirds)". In Josep, del Hoyo; Andrew, Elliott; David, Christie (eds.). Handbook of the Birds of the World. Volume 13, Penduline-tits to Shrikes. Barcelona: Lynx Edicions. pp. 196–243. ISBN   978-84-96553-45-3.
  3. Sakai, Shoko; Kato, Makoto; Tamiji Inoue (1999). "Three pollination guilds and variation in floral characteristics of Bornean gingers (Zingiberaceae and Costaceae)". American Journal of Botany. 86 (5): 646–658. doi:10.2307/2656573. PMID   10330067.
  4. Gill, Frank; Donsker, David, eds. (2019). "Dippers, leafbirds, flowerpeckers, sunbirds". World Bird List Version 9.1. International Ornithologists' Union. Retrieved 30 January 2019.