VU

Silky Oldfield Mouse

Thomasomys bombycinus

Unknown

Overview

A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.

Thomasomys bombycinus faces significant pressure from agricultural expansion and cattle ranching in the Colombian Andes, which fragments and destroys its cloud forest habitat. Mining activities and infrastructure development further reduce available habitat, while the species' restricted range makes it particularly vulnerable to localized threats. Climate change poses an additional risk by altering the temperature and humidity conditions of the montane forests this species depends upon.

Threat summary

Habitat

This species inhabits cloud forests and montane humid forests in the Colombian Andes, typically at elevations between 2,000-3,000 meters. It prefers dense, moss-covered forest environments with high humidity and consistent cloud cover that characterize these Andean ecosystems.

Forest· majorGrassland· major

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Cavendishia macrocephala

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Frequently asked questions

Why is Silky Oldfield Mouse classified as Vulnerable?
Silky Oldfield Mouse is classified as Vulnerable because the population is declining and the species faces a high risk of extinction in the medium-term future if current pressures continue. Thomasomys bombycinus faces significant pressure from agricultural expansion and cattle ranching in the Colombian Andes, which fragments and destroys its cloud forest habitat. Mining activities and infrastructure development further reduce available habitat, while the species' restricted range makes it particularly vulnerable to localized threats. Climate change poses an additional risk by altering the temperature and humidity conditions of the montane forests this species depends upon.
Where does Silky Oldfield Mouse live?
Silky Oldfield Mouse occurs in Colombia. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Silky Oldfield Mouse?
The main threats to Silky Oldfield Mouse are ai-1, ai-2, ai-3, and ai-4. The full IUCN-classified threat record for this species is detailed on the species page.

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