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

American Robin In Sierra Nevada

All regionsSierra NevadaForest birds

American Robin in Sierra Nevada has fallen sharply: down 62% on the route-weighted index since 1970.

-62%Since 1970
40Routes In Region
56Years

Notable Signals

long arc declinecomputed index

American Robin has fallen sharply in Sierra Nevada: down 62% on the route-weighted index since 1970.

Forecast

If the recent trend holds, American Robin in Sierra Nevada is projected to fall about 20% by 2029 — from 19 in 2024 to a central estimate of 15 (95% range 3.0–27). A 5-year backtest shows a typical error of ±26.1%, with 100% of held-out values landing inside the 95% band.

-20%Change by 2029
15Projected 2029 index
3.0–2795% range
±26.1%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
2025174.729
2026164.229
2027163.828
2028163.428
2029153.027

Routes In Sierra Nevada

Routes recording American Robin in Sierra Nevada.
Cottage SpgsCALIFORNIA611975
GeneseeCALIFORNIA522024
GoumazCALIFORNIA522011
Forest Hill 2CALIFORNIA522005
Eagle LakeCALIFORNIA512024
PaxtonCALIFORNIA452024
ChesterCALIFORNIA412017
Little TruckeeCALIFORNIA362023
Lassen ParkCALIFORNIA341989
Forest HillCALIFORNIA322022
Last ChanceCALIFORNIA322019
WoodfordsCALIFORNIA242024
Pine MountainCALIFORNIA242017
ChilcootCALIFORNIA222024
Higgins CornCALIFORNIA212024
WestvilleCALIFORNIA202024
Tuolumne GroveCALIFORNIA202024
RivertonCALIFORNIA172023
Tahoe NfCALIFORNIA171994
PlacervilleCALIFORNIA172024
CoultervilleCALIFORNIA162019
LakeshoreCALIFORNIA152024
SattleyCALIFORNIA142024
Pollock PinesCALIFORNIA142024
DardanelleCALIFORNIA132019

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