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| Subspecies: | Unknown |
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| Est. World Population: | |
| CITES Status: | NOT LISTED |
| IUCN Status: | Vulnerable |
| U.S. ESA Status: | NOT LISTED |
| Body Length: | |
| Tail Length: | |
| Shoulder Height: | |
| Weight: | |
| Top Speed: | |
| Jumping Ability: | (Horizontal) |
| Life Span: | in the Wild |
| Life Span: | in Captivity |
| Sexual Maturity: | (Females) |
| Sexual Maturity: | (Males) |
| Litter Size: | |
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Habitat:
The preferred habitat is high terra firme forest. However, the species has occasionally been observed in fragmented forest areas, in inundated forests (Ayres 1981; Wallace et al. 1996; Ferrari et al. 2003), and in vegetation at the transition between forest and savanna (Ferrari et al. 1999). Chiropotes albinasus prefers undisturbed habitats, but its occurrence in forest fragments smaller than 100 ha is possible if a combination of crucial ecological factors prevail (i.e., habitat quality, presence of key resources and absent or reduced hunting pressure; Ferrari et al. 1999).White-nosed bearded saki is a specialized seed predator and a highly frugivorous species, with as much as 90% of the diet composed of fruits (Ayres 1981; Pinto 2008). Ayres (1981) estimated home ranges size to be 200-350 ha in Aripuanã. Home range size of a group of 56 members at Flona Tapajós exceeded 1,000 ha (Pinto 2008).
Range:
Chiropotes albinasus occurs in the Madeira-Xingu interfluvium (Ayres 1981, Hershkovitz 1985, Ferrari et al. 1999). In the South and West of its range it appears to have an unusual distribution. It is absent from the Jiparaná-Marmoré interfluvium (between the Rios Mamoré, Madeira and Jiparaná and Serra dos Pacaás Novos in the South), and from areas of terra firme forest south of Serra dos Pacaás Novos; as such, it is absent from almost two-thirds of the state of Rondônia (Ferrari et al. 1999). Unexpectedly, it occurs further south in transitional, savanna-like forest (Ferrari et al. 1999), extending south as far as the east bank of the Rio Guaporé in extreme southern Rondônia, at the border with Bolivia (Wallace et al. 1996). Ferrari et al. (1999) suggest that ecological factors, rather than physical barriers, limit the distribution of Chiropotes albinasus in this area, possibly linked to competition with other pitheciine species, such as Pithecia irrorata.
Global Forest Watch data for the Brazilian states of Amazonas, Mato Grosso, Para and Rondonia suggests that, should forest loss continue at the same rate that has impacted the previous generation (2009-2018), 15% or more of this species’ suitable habitat is likely to be lost by the year 2048 (Global Forest Watch 2020).
Global Forest Watch data for the Brazilian states of Amazonas, Mato Grosso, Para and Rondonia suggests that, should forest loss continue at the same rate that has impacted the previous generation (2009-2018), 15% or more of this species’ suitable habitat is likely to be lost by the year 2048 (Global Forest Watch 2020).
Conservation:
The species occurs in the following protected areas:
- Amazônia National Park (1,084,895.62 ha),
- Jamanxim National Park (859,797.04 ha)
- National Florest (FLONA) of Tapajós (549,066.87 ha)
- FLONA Crepori (741,244.51 ha)
- FLONA do Trairão (257,526.32 ha)
- FLONA Itaituba I (220.639,44 ha)
- FLONA Itaituba II (427.3,6.56 ha)
- FLONA Jamanxim (1,301,683.04 ha)
- Riozinho do Anfrísio Extractive Reserve (736,135.28 ha)
- Tapajós Environmental Protected Area (2,060,332.70 ha)
- Jaru Biological Reserve (346,861.17 ha)
- Iquê Ecological Station (215,969.19 ha)
- Cristalino State Park (184,900 ha)
- Sucunduri State Park (808,312.18 ha)