Taczanowski's Oldfield Mouse
VU

Taczanowski's Oldfield Mouse

Thomasomys taczanowskii

Unknown

Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Taczanowski's_Oldfield_mouse

Overview

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

Taczanowski's Oldfield Mouse faces significant pressure from agricultural expansion and livestock grazing in Peru's high-altitude ecosystems. Mining activities and infrastructure development in the Andes further fragment its already restricted montane habitat. Climate change poses an additional threat as warming temperatures may force this cold-adapted species to higher elevations with increasingly limited suitable habitat.

Threat summary

Habitat

This species inhabits high-altitude montane grasslands and shrublands in the Peruvian Andes, typically found in páramo and puna ecosystems between 3,000-4,500 meters elevation. It prefers areas with dense grass cover and scattered shrubs that provide shelter and foraging opportunities.

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Frequently asked questions

Why is Taczanowski's Oldfield Mouse classified as Vulnerable?
Taczanowski's 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. Taczanowski's Oldfield Mouse faces significant pressure from agricultural expansion and livestock grazing in Peru's high-altitude ecosystems. Mining activities and infrastructure development in the Andes further fragment its already restricted montane habitat. Climate change poses an additional threat as warming temperatures may force this cold-adapted species to higher elevations with increasingly limited suitable habitat.
Where does Taczanowski's Oldfield Mouse live?
Taczanowski's Oldfield Mouse occurs in across multiple regions. Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Taczanowski's Oldfield Mouse?
The main threats to Taczanowski's 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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