Christmas Island Shrew
CR

Christmas Island Shrew

Crocidura trichura

UnknownCRAU

Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Christmas_Island_shrew

Overview

The Christmas Island shrew, also known as the Christmas Island musk-shrew, is an extinct species of shrew from Christmas Island. It was variously placed as subspecies of the Asian gray shrew or the Southeast Asian shrew, but morphological differences and the great distances between the distribution of these species indicate that the Christmas Island shrew was a distinct species.

The Christmas Island Shrew faces severe threats primarily from habitat destruction and degradation caused by invasive species and human activities on Christmas Island. The species' extremely limited range makes it particularly vulnerable to any environmental changes, with invasive ants, cats, and habitat clearing for development posing the greatest risks to its survival.

Threat summary

Habitat

The Christmas Island shrew was a terrestrial animal that occupied tall plateau rainforests with deep soil, as well as the shallow soil of terrace rainforests. It remains unknown if the species could live in secondary growth. This shrew fed primarily on small beetles and used holes in rocks and tree roots for shelter.

Frequently asked questions

Why is Christmas Island Shrew classified as Critically Endangered?
Christmas Island Shrew is classified as Critically Endangered — facing an extremely high risk of extinction in the wild — because population sizes are very small, declining sharply, or restricted to a tiny range. The Christmas Island Shrew faces severe threats primarily from habitat destruction and degradation caused by invasive species and human activities on Christmas Island. The species' extremely limited range makes it particularly vulnerable to any environmental changes, with invasive ants, cats, and habitat clearing for development posing the greatest risks to its survival.
Where does Christmas Island Shrew live?
Christmas Island Shrew 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 Christmas Island Shrew?
The main threats to Christmas Island Shrew 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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