The northern Amazon red squirrel (Sciurus igniventris) is a species of squirrel from South America. It occurs in Brazil, Colombia, Ecuador, Peru and Venezuela. It is widespread across its distribution and inhabits lowland forests, preferring a diet of nuts with especially thick shells. It is considered a least-concern species by the International Union for Conservation of Nature, though it is hunted for food in Ecuador and Peru and may be subject to habitat fragmentation from human logging activities.[1]
| Northern Amazon red squirrel | |
|---|---|
 | |
| Sumaco Napo-Galeras National Park, Ecuador | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Mammalia |
| Infraclass: | Placentalia |
| Order: | Rodentia |
| Family: | Sciuridae |
| Genus: | Sciurus |
| Species: | S. igniventris |
| Binomial name | |
| Sciurus igniventris Wagner, 1842 | |
| Subspecies[2] | |
| |
Taxonomy
editThe firey squirrel (Scurius flammifer) is thought to be a junior synonym of the Northern Amazon red squirrel,[3][4] although further investigation has been recommended to solidify these species' synonymy.[5]
Two subspecies are recognized:
Appearance
editNorthern Amazon red squirrels are dark red to rusty orange, with black grizzling. The paws are bright red or orange. The belly fur is a light orange, red, or white, contrasting sharply with the darker dorsal fur. A black line sometimes separates the ventral and dorsal colors. The tail is very bushy, with a black base and rusty or orange fur at the far end.[6]
Ecology and behavior
editNorthern Amazon red squirrels are diurnal, and primarily inhabit mature rainforests. They are specialist eaters of large seeds with thick, hard endocarps, especially palm nuts, although insects are also eaten. Foraging is done at all levels of the canopy, often near palm trees; approximately 10% of this time is spent on the ground, and open areas are mostly avoided.[6]
When startled, Amazon red squirrels flee rapidly along the ground. The species is mostly silent, but an alarm call of low-frequency "chatters" or "chucks" is made when alarmed.[6]
Interactions with humans
editNorthern Amazon red squirrels are sporadically hunted for food. In some areas their meat is highly valued, while in others they are rarely hunted. They are sometimes captured for sale as exotic pets.[6]
References
edit- 1 2 Amori, G.; Koprowski, J. & Roth, L. (2017) [errata version of 2016 assessment]. "Sciurus igniventris". IUCN Red List of Threatened Species. 2016 e.T20013A115154863. doi:10.2305/IUCN.UK.2016-3.RLTS.T20013A22246972.en. Retrieved 18 February 2022.
- ↑ Thorington, R.W. Jr.; Hoffmann, R.S. (2005). "Family Sciuridae". In Wilson, D.E.; Reeder, D.M (eds.). Mammal Species of the World: a taxonomic and geographic reference (3rd ed.). The Johns Hopkins University Press. pp. 754–818. ISBN 0-8018-8221-4. OCLC 26158608.
- ↑ De Vivo, M.; Carmignotto, A. P., A. P. (2015). "Family Sciuridae G. Fischer, 1817". Mammals of South America. Vol. 2. pp. 1–48.
- ↑ de Abreu-Jr, Edson Fiedler; Pavan, Silvia E.; Tsuchiya, Mirian T. N.; Wilson, Don E.; Percequillo, Alexandre R.; Maldonado, Jesús E. (2020-06-26). "Museomics of tree squirrels: a dense taxon sampling of mitogenomes reveals hidden diversity, phenotypic convergence, and the need of a taxonomic overhaul". BMC Evolutionary Biology. 20 (1): 77. Bibcode:2020BMCEE..20...77D. doi:10.1186/s12862-020-01639-y. ISSN 1471-2148. PMC 7320592. PMID 32590930.
- ↑ "Scurius igniventris (id=1001688)". ASM Mammal Diversity Database. American Society of Mammalogists. Retrieved 28 July 2025.
- 1 2 3 4 5 6 Thorington, Richard W.; Koprowski, John L.; Steele, Michael A.; Whatton, James F. (2012). "Sciurus igniventris (Wagner, 1842)) Northern Amazon Red Squirrel". Squirrels of the World. Johns Hopkins University Press. p. 57-58. ISBN 9781421404691. OCLC 821734054. Retrieved 2 Jun 2026.
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