BirdAnalyst
Species · BCR 9 · BBS 2026 Release · 1966–2025

American Robin In Great Basin

All regionsGreat BasinForest birds

American Robin in Great Basin has increased: up 32% on the route-weighted index since 1970.

+32%Since 1970TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
245Routes In RegionSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
57YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable SignalsNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

No notable trend signals for American Robin in Great Basin. See the full index history below.

American Robin In Great Basin Population Forecast

If the recent trend holds, American Robin in Great Basin is projected to rise about 22% by 2030 — from 16 in 2025 to a central estimate of 20 (95% range 12–28). A 5-year backtest shows a typical error of ±33.1%, with 100% of held-out values landing inside the 95% band.

+22%Change by 2030TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
20Projected 2030 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
12–2895% range95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
±33.1%Backtest errorBacktest errorTypical error when we hold out the most recent years, forecast them, and compare to what actually happened. Lower means a more trustworthy projection.Full methodology →
If the recent trend holds, American Robin in Great Basin is projected to rise about 22% by 2030 — from 16 in 2025 to a central estimate of 20 (95% range 12–28). A 5-year backtest shows a typical error of ±33.1%, with 100% of held-out values landing inside the 95% band.19682030
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →95% low95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →95% high95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
2026201228
2027201228
2028201228
2029201228
2030201228

Routes In Great Basin

Routes recording American Robin in Great Basin.
Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology →
Scootney ReservoirWASHINGTON1242025
MesaWASHINGTON1112008
NewhalemWASHINGTON1012025
KendallWASHINGTON892025
OthelloWASHINGTON831991
Cascade RivWASHINGTON832006
HenryIDAHO791983
BatesIDAHO762023
JarbidgeNEVADA762015
TwispWASHINGTON652024
PocatelloIDAHO642019
ConcreteWASHINGTON612025
PaisleyOREGON602025
DeschutesOREGON582025
SnowdenWASHINGTON582025
RirieIDAHO542025
Bly 2OREGON542025
LakeviewOREGON542025
WaitsburgWASHINGTON542004
LeavenworthWASHINGTON532024
GlacierWASHINGTON522024
Barnes ValOREGON511987
HarwoodWASHINGTON511997
Lapham Res.OREGON502025
IndexWASHINGTON501971

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14.