Washington mammals

Fringed Myotis in Washington

Myotis thysanodes

Native to Washington S3 Vulnerable in Washington

Not listed as nonindigenous in Washington by USGS NAS; native to its Washington range.

IUCN Red List status

LC – Least Concern

Widespread and abundant; not at risk.

Photo: calibas · CC0Fringed Myotis (Myotis thysanodes)Photo: colinpena · CC-BYFringed Myotis (Myotis thysanodes)Photo: mypubliclands · Public domainCluster of fringed myotis bats roosting on a cave ceilingPhoto: Juan Cruzado Cortés · CC BY-SA 4.0Fringed myotis clinging to tree bark at night

Fringed Myotis in Washington, by the numbers

Rare in Washington 112th most recorded of 145 mammals logged in Washington

14 occurrence records

1 with iNaturalist photos

Sep 20, 2021 Last seen in Washington

Records from 2000–2026.

When to look for the Fringed Myotis in Washington

Most sightings fall in July.

14 Washington occurrence records (iNaturalist and GBIF) by month of year, 2000–2026. Shows when the species is recorded, not a guarantee of presence. Based on a small number of dated records; the seasonal pattern may not be representative.

Monthly Washington records (table)

Month	Records
January	0
February	0
March	0
April	0
May	0
June	2
July	6
August	2
September	2
October	2
November	0
December	0

Monthly fringed myotis occurrence records (iNaturalist and GBIF) in Washington, 2000–2026.

Seasonality

Year-round in Washington, with recorded sightings peaking in July.

Occurrence map

Where Fringed Myotis has been recorded in Washington

14 records mapped · zoom and drag to explore

14 Washington records mapped

Where it's recorded in Washington

County	Records
Douglas County	4
Okanogan County	3
Pend Oreille County	2
Columbia County	2
Mason County	1
Snohomish County	1
Whitman County	1

The complete county distribution, spread across 7 Washington counties. Every occurrence record falls in one county, so these sum to the total. Counties from GBIF and US Census boundaries.

Across the Washington overlay, fringed myotis is represented by 14 records. The source fields show 1 iNaturalist record and 14 GBIF records, so the feeds overlap and should not be added together.

Its clearest calendar contrast is July’s 6 records versus January in 0. Both Olympic National Park and Dungeness National Wildlife Refuge appear as search areas, although the data do not rank those sites. Together these are submitted-record patterns, not evidence of Washington population size.

Full species profile Fringed Myotis Myotis thysanodes Size 5.4 cm2.1 in Weight 9 g0.3 oz Lifespan 18 yr View the full profile

More mammals in Washington in the atlas

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
NatureServe ExplorerCC-BYthe state conservation rank
IUCN Red Listattributed factthe global conservation status
USGS NASpublic domainnative / introduced status
Natural Earthpublic domainthe relief basemap
USFSpublic domainnational-forest boundaries