BirdAnalyst
Species · BCR 15 · BBS 2025 Release · 1966–2024

Blue-gray Gnatcatcher In Sierra Nevada

All regionsSierra NevadaForest birds

Blue-gray Gnatcatcher in Sierra Nevada has held roughly steady: up 5% on the route-weighted index since 1974.

+5%Since 1974
21Routes In Region
47Years

Notable Signals

No notable trend signals for Blue-gray Gnatcatcher in Sierra Nevada. See the full index history below.

Forecast

If the recent trend holds, Blue-gray Gnatcatcher in Sierra Nevada is projected to rise about 225% by 2029 — from 0.32 in 2024 to a central estimate of 1.0 (95% range 0.23–1.8). A 5-year backtest shows a typical error of ±207.8%, with 40% of held-out values landing inside the 95% band.

+225%Change by 2029
1.0Projected 2029 index
0.23–1.895% range
±207.8%Backtest error
19722029
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
20250.970.171.8
20260.980.181.8
20271.000.201.8
20281.00.211.8
20291.00.231.8

Routes In Sierra Nevada

Routes recording Blue-gray Gnatcatcher in Sierra Nevada.
Silver CityCALIFORNIA72013
CoultervilleCALIFORNIA72019
Forest HillCALIFORNIA42022
Tuolumne GroveCALIFORNIA32024
WestvilleCALIFORNIA22019
Cottage SpgsCALIFORNIA21973
Bass LakeCALIFORNIA22019
KernvilleCALIFORNIA22008
Forest Hill 2CALIFORNIA22005
Eagle LakeCALIFORNIA12022
WoodfordsCALIFORNIA11998
Greenhorn MtCALIFORNIA11973
Kings CanyonCALIFORNIA12024
Higgins CornCALIFORNIA12024
DownievilleCALIFORNIA11984
RivertonCALIFORNIA12021
LakeshoreCALIFORNIA12024
WawonaCALIFORNIA12023
Pine MountainCALIFORNIA12017
ChilcootCALIFORNIA12023
StrawberryCALIFORNIA12018

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