Ticul’s desert shrew

Notiosorex tataticuli

NENot Evaluated

Ticul's desert shrew is a tiny insect hunter of dry southwestern country, known scientifically as Notiosorex tataticuli. Unlike many shrews, it can persist in hot landscapes by using sheltered ground, rock crevices, and dense cover. Records span several western states, including Nevada, but their patchy pattern reflects a hard-to-detect animal as much as its true distribution.

Range through the year

Where Ticul’s desert shrew is seen

Ticul’s desert shrew is recorded in 2 US states from 30 occurrence records, most heavily in California (20 records) and Nevada (10).

Current range30 records · 2 states
AlabamaArizonaArkansasCalifornia · 20 records · view state pageColoradoConnecticutDelawareDistrict of ColumbiaFloridaGeorgiaIdahoIllinoisIndianaIowaKansasKentuckyLouisianaMaineMarylandMassachusettsMichiganMinnesotaMississippiMissouriMontanaNebraskaNevada · 10 records · view state pageNew HampshireNew JerseyNew MexicoNew YorkNorth CarolinaNorth DakotaOhioOklahomaOregonPennsylvaniaRhode IslandSouth CarolinaSouth DakotaTennesseeTexasUtahVermontVirginiaWashingtonWest VirginiaWisconsinWyomingAlaskaAKHawaiiHIPuerto RicoPR
Occurrence data by state and month
Ticul’s desert shrew – occurrence records by US state and month (30 total across 2 states)
StateJanFebMarAprMayJunJulAugSepOctNovDecYear
California·19311·11·2120
Nevada·····215·2··10

Based on 30 georeferenced US records, 2000-2026. Shading is observation density (where people record sightings), not true abundance. Alaska, Hawaii & Puerto Rico shown as insets.

Explore by state

Ticul’s desert shrew across 2 states

Occurrence records, conservation status, and the places it turns up, state by state. Open a state for detail, or visit its full page.

  • CaliforniaNativeRare20 records

    State rankUnranked

    Notable placesUpper Las Virgenes Open Space Preserve / Ahmanson · Death Valley National Park

    Countiesrecorded in 7

    Year-round in California, with recorded sightings peaking in March.

  • NevadaNativeRare10 records

    State rankVulnerable

    Countiesrecorded in 2

    Sparse observation record in Nevada; presence confirmed but timing of activity not well documented.

IUCN Red List status

NE – Not Evaluated

Not yet assessed against IUCN Red List criteria.

Observation peakMarch35 records

Seasonality from research-grade observation dates across the US (35 records, all years). Reflects when the species is recorded, not a guarantee of presence.

Best encounter

Where and when to see a Ticul’s desert shrew

Your best chance: California, in March.

Where
CaliforniaCA
When
March

Commonly confused with

Animals people sometimes mistake for the ticul’s desert shrew, and how to tell them apart.

AI-generated image: Crawford's gray shrew walking through leaf litter with its snout lowered. No public-domain photograph of this species exists. This image was generated with AI from verified reference material and reviewed by our editorial team for accuracy

Crawford's Gray Shrew

Notiosorex crawfordi

How to tell apart Ticul's desert shrew and Crawford's gray shrew are nearly identical congeners with pale grayish fur and relatively large ears for a shrew; reliable field separation requires cranial measurements, though Crawford's gray shrew ranges more broadly across the desert Southwest.

A desert shrew that stays out of sight

Reports come from arid scrub, rocky places, washes, and sheltered edges across the Southwest. Small mammals this secretive are often found through focused trapping rather than casual observation. It hunts insects and other tiny animals, using a pointed snout to search litter and crevices. High energy needs mean it can’t treat food as an occasional resource.

How it finds food and avoids danger

It hunts insects and other tiny animals, using a pointed snout to search litter and crevices. High energy needs mean it can’t treat food as an occasional resource. It doesn’t depend on open exposure when cover is available. Short movements between shelter and food reduce risk, especially where owls, snakes, foxes, or other hunters patrol.

Reading the record pattern

Shade and protected spaces buffer heat and dryness. Because detection methods differ greatly among counties and states, missing records shouldn’t be treated as proof that the shrew is absent. Seasonal and geographic reports show where people have documented the species. They don’t measure abundance, and a blank area may reflect access, survey methods, or identification difficulty.

Breeding and the next generation

Young are born in protected nests or burrows, depending on the species’ way of life. Timing is tied to local food and weather, so it can shift across elevation and latitude. Parents don’t raise young in exposed ground when a sheltered chamber or nest is available.

Conservation in a changing West

The most useful conservation question isn’t just how many dots appear in a database. It’s whether connected habitat still supplies food, shelter, workable ground, and safe movement. Drought, severe fire, development, and altered water can matter differently across the range. Protecting the habitat features this species actually uses gives local populations more room to persist.

Data & sources

The data and visualizations on this page draw on these open sources:

  • GBIFCC-BY 4.0occurrence records behind the range map, elevation, and record counts
  • iNaturalistCC0 / CC-BY / CC-BY-SAobservations, photos, and audio recordings
  • PhyloPicCC0 / CC-BY per itemthe to-scale silhouettesAndrew A. Farke (human silhouette, CC-BY 3.0)
  • IUCN Red Listattributed factthe global conservation status