Taxonomy and systematics
The crimson-rumped toucanet was originally described in the genus '' Pteroglossus''. Two subspecies are recognized, theDescription
The crimson-rumped toucanet is long. The nominate subspecies weighs and ''A. h. sexnotatus'' . 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.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, 2022Distribution and habitat
The nominate subspecies of crimson-rumped toucanet is found from western Venezuela'sBehavior
Movement
The crimson-rumped toucanet is apparently sedentary; no movements are known.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.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.Vocal and non-vocal sounds
The crimson-rumped toucanet's song is a " ries 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, ndinteractive 'snark' calls". When interacting, members of a pair make "loud wing sounds".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. 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.Gallery
References
{{Taxonbar, from=Q886520 crimson-rumped toucanet Birds of the Colombian Andes Birds of the Ecuadorian Andes crimson-rumped toucanet Taxonomy articles created by Polbot crimson-rumped toucanet