BirdAnalyst
Species · BCR 9 · BBS 2025 Release · 1966–2024

Hermit Warbler In Great Basin

All regionsGreat BasinForest birds

Hermit Warbler in Great Basin has edged up: up 14% on the route-weighted index since 1973.

+14%Since 1973
24Routes In Region
53Years

Notable Signals

No notable trend signals for Hermit Warbler in Great Basin. See the full index history below.

Forecast

If the recent trend holds, Hermit Warbler in Great Basin is projected to rise about 78% by 2029 — from 0.24 in 2024 to a central estimate of 0.42 (95% range 0.18–0.66). A 5-year backtest shows a typical error of ±37.2%, with 100% of held-out values landing inside the 95% band.

+78%Change by 2029
0.42Projected 2029 index
0.18–0.6695% range
±37.2%Backtest error
19712029
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected index95% low95% high
20250.410.170.65
20260.410.170.65
20270.410.170.66
20280.420.180.66
20290.420.180.66

Routes In Great Basin

Routes recording Hermit Warbler in Great Basin.
E. Mt. AdamsWASHINGTON312024
Suiattle RivWASHINGTON152019
Mt HoodOREGON62023
Camp ShermanOREGON61996
Crowder FlatCALIFORNIA32019
TionestaCALIFORNIA22021
Medicine Mtn.CALIFORNIA22015
Dell SpringOREGON21989
Davis LakeOREGON22024
Badger CreekOREGON22023
RonaldWASHINGTON21997
MacdoelCALIFORNIA12019
Clear Lk ResCALIFORNIA11996
BartleCALIFORNIA12021
HackamoreCALIFORNIA12007
Lapham Res.OREGON12001
Wizard FallsOREGON12023
Bald Mtn.OREGON12009
SistersOREGON12004
RimrockWASHINGTON11976
SnowdenWASHINGTON12022
White ChuckWASHINGTON11999
CarltonWASHINGTON11998
L. WenatcheeWASHINGTON12007

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.