Woolly Bird's Nest Fungus
Nidula niveotomentosa · Family Agaricaceae · Updated October 2026
203US records
6states
Decbusiest month
203 US records since 1917 (163 in the last 10 years)
Last seen Sep 18, 2026 (about 5 weeks ago) near Hiouchi, Del Norte County, CA, photographed by an iNaturalist user, with the ID agreed on by other iNaturalist users (research grade). Most US records come from California, Oregon and Washington, and the busiest months are Dec, Mar and Feb. (Data as of October 26, 2026; records can lag by weeks.)
⚠ Never eat a wild mushroom based on this site. We show where fungi have been recorded, nothing more. We never say any mushroom is edible or safe, and you shouldn't decide that from any website, app or photo. Many deadly mushrooms look like harmless ones. If someone may have eaten a wild mushroom, call Poison Control at 1-800-222-1222 right away.
Lookalike warning. Many mushrooms, including deadly ones, closely resemble each other, and the only reliable identification comes from an expert looking at the actual specimen (often with spore prints or microscopy). Never use a name, photo or record count on this page to decide what something is.
When it's recorded
Records by month, all years. Busiest: Dec, Mar, Feb.
Where it's recorded
| State | Records | Latest sighting |
|---|---|---|
| California | 70 | Sep 18, 2026 |
| Oregon | 65 | Mar 30, 2026 |
| Washington | 57 | May 31, 2026 |
| Alaska | 4 | Sep 9, 2023 |
| Montana | 4 | Apr 18, 2022 |
| Idaho | 3 | May 9, 2025 |
Top counties
- Snohomish County, WA (16) · latest Apr 25, 2026
- Humboldt County, CA (15) · latest Dec 7, 2025
- Sonoma County, CA (14) · latest Jan 6, 2025
- Benton County, OR (14) · latest Mar 30, 2026
- Lane County, OR (11) · latest Feb 15, 2025
- Mendocino County, CA (11) · latest Jun 6, 2026
- Santa Cruz County, CA (7) · latest Mar 28, 2024
- Thurston County, WA (6) · latest Mar 25, 2025
- King County, WA (6) · latest Feb 9, 2026
- Del Norte County, CA (5) · latest Sep 18, 2026
More on this species from GBIF.
Bring along
🍄
Regional mushroom field guideSee on Amazon🍄
Folding mushroom knife with brushSee on Amazon🍄
Wicker foraging basketSee on Amazon🍄
10x hand lens / loupeSee on Amazon🍄
Spore print paperSee on AmazonAs an Amazon Associate we earn from qualifying purchases.