Abyssinian scimitarbill

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Abyssinian scimitarbill
Abyssinian scimitarbill Kenya.jpg
Adult bird in Laikipia, Kenya
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Bucerotiformes
Family: Phoeniculidae
Genus: Rhinopomastus
Species:
R. minor
Binomial name
Rhinopomastus minor
(Rüppell, 1845)

The Abyssinian scimitarbill (Rhinopomastus minor) is a species of bird in the family Phoeniculidae . The term Abyssinia, is an old name for the region of Ethiopia, and scimitar refers to a curved sword, which its bill resembles. It is found in Djibouti, Ethiopia, Kenya, Somalia, South Sudan, Tanzania, and Uganda. The bird is non migratory, diurnal, and terrestrial. [2] Their nests are sometimes parasitized by the greater honeyguide (Indicator indicator) which are favored by some because they can guide to beehives. [3]

Contents

Description

The bird is all black with a blue-purple iridescence which covers their whole body and especially the back of the head. The bird's beak is bright orange to red and is characteristically curved and pointed. It is slightly longer than the length of its head and is built to probe into cracks and crevices for insects. It can be differentiated from other wood hoopoes by its all black legs and shorter tail, which is about the length of the bird’s body excluding its head. [4]

Sexual Dimorphism

The males coloring tends to be more blue, whereas the females have more brown tones especially in the head. [4] Males also tend to be slightly larger than females. Their bill length is: Male; 3.33 cm; Female; 2.78 cm. Their tail length is: Male: 10.7 cm; Female; 9.5 cm. Their body mass is around 22-28g with the males being on the heavier end. [5]

Taxonomy

The bird is the smallest in the group of Scimitarbills which contains three other species. [6] They are in the family of wood hoopoes, and in the order of Bucerotiformes which contains the hornbills, ground hornbills, hoopoes and wood hoopoes. [7]

Habitat and Distribution

The bird is found commonly in open bushed, and dry savanna habitats and is an uncommon resident in thorn srubs in low altitudes below 1400m (an intermediate biome between a dessert and tropical forest). [8]

There are two subspecies which occupy different ranges of Africa. The Rhinopomastus minor minor occurs on the eastern edge of Africa Ethiopia to Somalia and Kenya, and Rhinopomastus minor cabsanisi occurs further west in Sudan to Ethiopia, Kenya and Tanzania. [6] See range map

Distribution

The species has a breeding range is around the equator with minimum to maximum latitudes of -9.01 to 11.78 degrees. [6]

The species has a combined total of around 20,000km2 of territorial range, although this area is largely fragmented. [9] While the population is declining, it appears to be at a rate of only 5% over three generations and therefore the bird is considered to be of least concern. [2]

Behavior

Vocalizations

The Abyssian Scimitarbill and the Common Scimitarbill (Rhinopomastus cyanomelas) both emit sharp cries and an unpleasant odor to deter predators (Hedley & Caro, 2022). Their warning calls sound like a series of rising notes "dok". [4] Other calls sound like shrill elongated chirps which rise and then fall minutely in pitch over the course of around eight to twelve chirps. Their song sounds similar to their calls, but with more silence between chirps. Listen here

Diet

The bird is insectivorous and eats mostly live insects such as bees, beetles, larvae, caterpillars, ants, flies and wasps. They will also eat seeds and berries. While much research has been done on the species, it has been observed to nest in abandoned beehives, although it does not consume honey or other bee products. [3]

Reproduction

The bird is a monogamous solitary nester. The age of their first breeding is on average 1.23 years with an average clutch size of 2 eggs. The adults have an annual survival rate of 0.66 and the average length of a generatio is 2.89 years. [2] They typically nest in holes or fissures, sometimes excavated by other species. This includes holes in trees and sometimes abandoned beehives that are a height of around 0.5-2m from the ground. [3] The cabanisi race has a strong preference for breeding in the dry season. [3]

Parasitic Nesting Interaction

The greater honeyguide will occasionally parasitize the nest of the scimitarbill. The exact frequency and effect that this relationship has on the species is not fully documented but there are several observations on clutch success rates.

In one case from June to July 2009, a pair raised three young in a nest box at Green park. In another case in June to July 2009, three young were raised by a pair of birds in a nest box at Greenwood Park Estate, Eburru, near Naivasha. In another instance between October 2009 to July 2012, a pair of birds laid a total of 33 eggs (11 clutches of 3) over 3 years. However, none of these eggs survived because the greater honeyguide parasitized on the clutches. During the three year period, no scimitarbills hatched, while 7 out of a total of 12 of the parasitic honeyguide eggs successfully fledged. On four cases out of eleven, the scimitarbills ejected all eggs from the nest. Later from August 2012-September 2014, four clutches (12 eggs total) were laid without any honeyguides, and all but one individual was successfully fledged. [10]

Related Research Articles

<span class="mw-page-title-main">Honeyguide</span> Family of near passerine birds

Honeyguides are near passerine birds in the order Piciformes. They are also known as indicator birds, or honey birds, although the latter term is also used more narrowly to refer to species of the genus Prodotiscus. They have an Old World tropical distribution, with the greatest number of species in Africa and two in Asia. These birds are best known for their interaction with humans. Honeyguides are noted and named for one or two species that will deliberately lead humans directly to bee colonies, so that they can feast on the grubs and beeswax that are left behind.

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

The wood hoopoes or scimitarbills are a small African family, Phoeniculidae, of near passerine birds. They live south of the Sahara Desert and are not migratory. While the family is now restricted to Sub-Saharan Africa, fossil evidence shows that it once had a larger distribution. Fossils attributed to this family have been found in Miocene rocks in Germany.

<span class="mw-page-title-main">Southern ground hornbill</span> Species of bird

The southern ground hornbill is one of two species of ground hornbill, both of which are found solely within Africa, and is the largest species in the hornbill order worldwide. It can be found in the southern regions of Africa, ranging from Kenya to South Africa. Within these regions, they inhabit both woodlands and savannas. The other species of the genus Bucorvus is the Abyssinian ground hornbill, B. abyssinicus.

<span class="mw-page-title-main">Green wood hoopoe</span> Species of bird

The green wood hoopoe is a large, up to 44 cm (17 in) long tropical bird native to Africa. It is a member of the family Phoeniculidae, the wood hoopoes, and was formerly known as the red-billed wood hoopoe.

<span class="mw-page-title-main">African grey hornbill</span> Species of bird

The African grey hornbill is a member of the hornbill family of mainly tropical near-passerine birds found in the Old World. It is a widespread resident breeder in much of sub-Saharan Africa and the southwest of the Arabian Peninsula. The African grey hornbill has escaped or been deliberately released into Florida, USA, but there is no evidence that the population is breeding and may only persist due to continuing releases or escapes.

<span class="mw-page-title-main">Greater honeyguide</span> Species of bird

The greater honeyguide is a bird in the family Indicatoridae, paleotropical near passerine birds related to the woodpeckers. Its English and scientific names refer to its habit of guiding people to bee colonies. Claims that it also guides non-human animals are disputed.

<span class="mw-page-title-main">Village weaver</span> Species of bird in the Ploceidae family

The village weaver , also known as the spotted-backed weaver or black-headed weaver, is a species of bird in the family Ploceidae found in much of sub-Saharan Africa. It has also been introduced to Portugal and Venezuela as well as to the islands of Hispaniola, Martinique, Puerto Rico, Mauritius and Réunion.

<span class="mw-page-title-main">Ground hornbill</span> Genus of birds

The ground hornbills (Bucorvidae) are a family of the order Bucerotiformes, with a single genus Bucorvus and two extant species. The family is endemic to sub-Saharan Africa: the Abyssinian ground hornbill occurs in a belt from Senegal east to Ethiopia, and the southern ground hornbill occurs in southern and East Africa.

<span class="mw-page-title-main">Abyssinian ground hornbill</span> Species of bird

The Abyssinian ground hornbill or northern ground hornbill is an African bird, found north of the equator, and is one of two species of ground hornbill. It is the second largest species of African hornbill, only surpassed by the slightly larger southern ground hornbill.

<span class="mw-page-title-main">Chestnut sparrow</span> Species of bird

The chestnut sparrow is a species of passerine bird in the sparrow family Passeridae. It is the smallest member of the sparrow family, at about 11 cm (4.3 in) long. The breeding male has deep chestnut plumage and the female and juvenile are coloured a duller grey with some chestnut markings. Like its closest relatives in the genus Passer, the Arabian golden sparrow and the Sudan golden sparrow, it is gregarious and found in arid areas. Ranging through the east of Africa from Darfur in Sudan to Tanzania, it is found in dry savanna, papyrus swamps, and near human habitation. Adults and juveniles both feed mostly on grass seeds, and fly in flocks, often with other species of birds, to find food. It nests in trees, building its own domed nests, and also usurping the more elaborate nests of weavers.

<span class="mw-page-title-main">Speckled mousebird</span> Species of bird

The speckled mousebird is the largest species of mousebird, as well as one of the most common. It is found throughout most of Central, Eastern and Southern Africa.

<span class="mw-page-title-main">Bucerotiformes</span> Order of birds

Bucerotiformes is an order of birds that contains the hornbills, ground hornbills, hoopoes and wood hoopoes. These birds were previously classified as members of Coraciiformes. The clade is distributed in Africa, Asia, Europe and Melanesia.

<span class="mw-page-title-main">Cardinal woodpecker</span> Species of bird

The cardinal woodpecker is a widespread and common resident breeder in much of sub-Saharan Africa. It occurs in a wide range of habitats, ranging from dense forest to thorn bush. It is fairly vocal and is easily identified by its call notes. The sexes are distinguishable by their head patterns.

<span class="mw-page-title-main">Baglafecht weaver</span> Species of bird

The baglafecht weaver is a species of weaver bird from the family Ploceidae which is found in eastern and central Africa. There are several disjunct populations with distinguishable plumage patterns. Only some races display a discrete non-breeding plumage.

<span class="mw-page-title-main">Grey-capped social weaver</span> Species of bird

The grey-capped social weaver is a sparrow-like liver-colored bird, with a pale grey crown, a dark grey bill, a whitish eye-ring, horn-colored legs, with some black in the wing and a light terminal band in the tail, that builds roofed nests made of straws, breeds in colonies in thorny Acacia trees, and feeds in groups gathering grass seeds and insects. Male and female have near identical plumage. DNA-analysis confirms it is part of the weaver family. It is found in Ethiopia, Kenya, Somalia, South Sudan, Sudan, Tanzania, and Uganda.

<span class="mw-page-title-main">Black-capped social weaver</span> Species of bird

The black-capped social weaver is a sparrow-like species of bird that has been assigned to the weaverbird family. It was originally described by Fisher and Reichenow, and later re-classified by the latter to the genus Pseudonigrita. Adults have a large black cap, ivory-colored bill, red eyes, brown back and wings, blackish-brown tail, white throat and underparts with a black midline, and dark horn-colored legs. It breeds in colonies and roofed nests with an entrance at the bottom in thorny trees such as acacias are constructed by the male from grass stems. It is found in parts of Ethiopia, Kenya, Somalia, and Tanzania. It is sometimes kept and bred in captivity.

<span class="mw-page-title-main">Abyssinian wheatear</span> Species of bird

The Abyssinian wheatear, or Abyssinian black wheatear, is a species of bird in the family Muscicapidae. It is found from Ethiopia to southern Kenya and north-eastern Tanzania.

<span class="mw-page-title-main">African hoopoe</span> Species of bird

The African hoopoe is a species of hoopoe in the family Upupidae. Previously considered as a subspecies of the Eurasian hoopoe, it is a resident species of southern Africa.

References

  1. BirdLife International (2016). "Rhinopomastus minor". IUCN Red List of Threatened Species . 2016: e.T22682710A92957434. doi: 10.2305/IUCN.UK.2016-3.RLTS.T22682710A92957434.en . Retrieved 12 November 2021.
  2. 1 2 3 Bird, Jeremy P.; Martin, Robert; Akçakaya, H. Reşit; Gilroy, James; Burfield, Ian J.; Garnett, Stephen T.; Symes, Andy; Taylor, Joseph; Şekercioğlu, Çağan H.; Butchart, Stuart H. M. (October 2020). "Generation lengths of the world's birds and their implications for extinction risk". Conservation Biology. 34 (5): 1252–1261. doi:10.1111/cobi.13486. ISSN   0888-8892. PMID   32058610. S2CID   211113247.
  3. 1 2 3 4 Reynolds, J. F. (1968). Abyssinian Scimitarbill Rhinopomastus minor cabanisi in Tanzania: A breeding record in a traditional beehive. Journal of East African Natural History, 117. hdl : 10520/AJA00128317_383
  4. 1 2 3 "Abyssinian Scimitarbill - eBird". ebird.org. Retrieved 2023-10-13.
  5. Tobias, Joseph A.; Sheard, Catherine; Pigot, Alex L.; Devenish, Adam J. M.; Yang, Jingyi; Sayol, Ferran; Neate‐Clegg, Montague H. C.; Alioravainen, Nico; Weeks, Thomas L.; Barber, Robert A.; Walkden, Patrick A.; MacGregor, Hannah E. A.; Jones, Samuel E. I.; Vincent, Claire; Phillips, Anna G. (March 2022). Coulson, Tim (ed.). "AVONET: morphological, ecological and geographical data for all birds". Ecology Letters. 25 (3): 581–597. doi: 10.1111/ele.13898 . hdl: 1893/34052 . ISSN   1461-023X. PMID   35199922.
  6. 1 2 3 Lepage, D. (2004). Rhinopomastus minor (Abyssinian Scimitar-bill)—Avibase. AviBase. https://avibase.bsc-eoc.org/species.jsp?avibaseid=46847C50C05E10A6
  7. Oiseaux.net. "Systematic classification of species by Bucerotiformes - This order includes 4 families. 75 species listed". www.oiseaux.net. Retrieved 2023-10-18.
  8. Zimmerman, D. A., Turner, D. A., & Pearson, D. J. (1996). Birds of Kenya and Northern Tanzania. London: A & C Black. A & C Black.
  9. Birdlife International. (2023). Abyssinian Scimitarbill (Rhinopomastus minor)—BirdLife species factsheet. Data Zone. http://datazone.birdlife.org/species/factsheet/22682710
  10. Dangerfield, G., & Turner, D. A. (2016). The breeding of Abyssinian Scimitarbill Rhinopomastus minor and Red-throated Tit Parus fringillinus in nest boxes in the central Rift Valley of Kenya. Scopus: Journal of East African Ornithology, 36(2), 53–54.