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

Chipping Sparrow In Sierra Nevada

All regionsSierra NevadaGeneralists

Chipping Sparrow in Sierra Nevada has declined: down 30% on the route-weighted index since 1970.

-30%Since 1970
39Routes In Region
56Years

Notable Signals

No notable trend signals for Chipping Sparrow in Sierra Nevada. See the full index history below.

Forecast

If the recent trend holds, Chipping Sparrow in Sierra Nevada is projected to fall about 47% by 2029 — from 6.0 in 2024 to a central estimate of 3.2 (95% range 0.00–11). A 5-year backtest shows a typical error of ±43%, with 100% of held-out values landing inside the 95% band.

-47%Change by 2029
3.2Projected 2029 index
0.00–1195% range
±43%Backtest error
19682029
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
20253.80.0012
20263.60.0012
20273.50.0011
20283.30.0011
20293.20.0011

Routes In Sierra Nevada

Routes recording Chipping Sparrow in Sierra Nevada.
GoumazCALIFORNIA462011
Eagle LakeCALIFORNIA282024
ChesterCALIFORNIA252017
Last ChanceCALIFORNIA222019
Little TruckeeCALIFORNIA142023
ChilcootCALIFORNIA132024
Pollock PinesCALIFORNIA122024
Higgins CornCALIFORNIA112024
Pine MountainCALIFORNIA112017
Tahoe NfCALIFORNIA101994
Cottage SpgsCALIFORNIA81975
Tuolumne GroveCALIFORNIA82024
DownievilleCALIFORNIA82022
RivertonCALIFORNIA82023
CrestviewCALIFORNIA72024
WestvilleCALIFORNIA62024
JohnsvilleCALIFORNIA52024
Greenhorn MtCALIFORNIA52008
GeneseeCALIFORNIA52024
WoodfordsCALIFORNIA42024
LumberyardCALIFORNIA42024
Hat CreekCALIFORNIA42018
Meadow ValleyCALIFORNIA42024
Lassen ParkCALIFORNIA31988
Silver CityCALIFORNIA31981

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