Crimson-rumped toucanet

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Crimson-rumped toucanet
CRTO Matthew-Gable.JPG
Coming for bananas in the West Andes of Colombia
Crimson-rumped Toucanet JCB.jpg
A. h. sexnotatus in northwestern Ecuador
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Piciformes
Family: Ramphastidae
Genus: Aulacorhynchus
Species:
A. haematopygus
Binomial name
Aulacorhynchus haematopygus
(Gould, 1835)
Subspecies

See text

Aulacorhynchus haematopygus map.svg
Synonyms
  • Pteroglossus haematopygus

The crimson-rumped toucanet (Aulacorhynchus haematopygus) is a near-passerine bird in the toucan family Ramphastidae. It is found in Colombia, Ecuador, and Venezuela. [2]

Contents

Taxonomy and systematics

The crimson-rumped toucanet was originally described in the genus Pteroglossus . [3] Two subspecies are recognized, the nominate A. h. haematopygus(Gould, 1835) and A. h. sexnotatusGould, 1868.

Description

The crimson-rumped toucanet is 40 to 45 cm (16 to 18 in) long. The nominate subspecies weighs 200 to 232 g (7.1 to 8.2 oz) and A. h. sexnotatus141 to 200 g (5.0 to 7.1 oz). Their bill is brownish red and black with a vertical white line at the base; the nominate has a larger proportion of black than A. h. sexnotatus. Males and females have the same plumage but females have a shorter bill than males. Adults of both subspecies are mostly green with a gold gloss to the nape and upper back, a red rump, chestnut tips on the central two or three pairs of tail feathers, and bare orange-brown skin around the dark eye. The nominate has blue above and below the eye and on the sides of the breast. A. h. sexnotatus has less blue in those areas. Immatures are duller overall, with an orangey rump and a mostly reddish bill without a white basal line. [4]

Distribution and habitat

The nominate subspecies of crimson-rumped toucanet is found from western Venezuela's Serranía del Perijá south on both slopes of the Andes through northern and central Colombia to its southwest. Its range might extend into northern Ecuador on the eastern slope of the Andes. A. h. sexnotatus is found on the western slope of Colombia's Western Andes in Nariño Department and south to Loja Province in Ecuador. The species primarily inhabits evergreen forest from the lowlands to the montane zone and is also found in semi-open landscapes like forest edges, secondary forest, and isolated fruiting trees in pastures and gardens. In elevation it mostly ranges between 300 and 2,200 m (980 and 7,200 ft) but is found as high as 2,750 m (9,000 ft). [4]

Behavior

Movement

The crimson-rumped toucanet is apparently sedentary; no movements are known. [4]

Feeding

The crimson-rumped toucanet forages at all levels of the forest, alone, in pairs, or in a small group. Its diet is primarily fruit and probably also includes insects and bird eggs. [4]

Breeding

The crimson-rumped toucanet's main breeding season spans from January to May but can begin as early as November in southern Colombia and Ecuador. During pair formation both sexes sing, call, chase, feed each other, and allopreen. They are believed to usually nest in an abandoned woodpecker hole. In captivity the clutch size is up to four eggs, the incubation period 16 to 17 days, and the time to fledging about four to five weeks after hatch. [4]

Vocal and non-vocal sounds

The crimson-rumped toucanet's song is a "[s]eries of variable, gruff, barking notes, 'daakk' to 'gggruk'" and is sung by both sexes, sometimes in duet. They also make "soft, long notes, rattle notes, [and] interactive 'snark' calls". When interacting, members of a pair make "loud wing sounds". [4]

Status

The IUCN has assessed the crimson-rumped toucanet as being of Least Concern. It has a large range, and though its population size is not known it is believed to be stable. No immediate threats have been identified. [1] It is considered common in Colombia and fairly common in Ecuador, and occurs in protected areas in both countries. It appears "to be adaptable, using secondary forest even in patches" and breeds successfully in captivity. [4]

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References

  1. 1 2 BirdLife International (2016). "Crimson-rumped Toucanet Aulacorhynchus haematopygus". IUCN Red List of Threatened Species . 2016: e.T22681978A92927477. doi: 10.2305/IUCN.UK.2016-3.RLTS.T22681978A92927477.en . Retrieved 20 December 2022.
  2. ↑ Gill, F.; Donsker, D.; Rasmussen, P., eds. (August 2022). "Jacamars, puffbirds, barbets, toucans, honeyguides". IOC World Bird List. v 12.2. Retrieved December 15, 2022.
  3. ↑ Gould, J. (1834). "Characters of a New Species of Toucan". Proceedings of the Zoological Society of London. II: 147. Retrieved December 20, 2022.
  4. 1 2 3 4 5 6 7 Short, L.L. and A. Bonan (2020). Crimson-rumped Toucanet (Aulacorhynchus haematopygus), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.crrtou1.01 retrieved December 20, 2022
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