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

American Robin In Great Basin

All regionsGreat BasinForest birds

American Robin in Great Basin has increased: up 37% on the route-weighted index since 1970.

+37%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 →
56YearsYears 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 30% by 2029 — from 16 in 2024 to a central estimate of 20 (95% range 12–28). A 5-year backtest shows a typical error of ±33.3%, with 100% of held-out values landing inside the 95% band.

+30%Change by 2029TrendPercent 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 2029 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 →
±33.3%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 30% by 2029 — from 16 in 2024 to a central estimate of 20 (95% range 12–28). A 5-year backtest shows a typical error of ±33.3%, with 100% of held-out values landing inside the 95% band.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 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 →
2025201228
2026201228
2027201228
2028201228
2029201228

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 →
MesaWASHINGTON1112008
NewhalemWASHINGTON1092024
Scootney ReservoirWASHINGTON1032024
KendallWASHINGTON872024
OthelloWASHINGTON831991
Cascade RivWASHINGTON832006
HenryIDAHO791983
BatesIDAHO762023
JarbidgeNEVADA762015
TwispWASHINGTON652024
PocatelloIDAHO642019
Magic MtnIDAHO612024
PaisleyOREGON562024
WaitsburgWASHINGTON542004
LeavenworthWASHINGTON532024
ConcreteWASHINGTON532024
GlacierWASHINGTON522024
Barnes ValOREGON511987
HarwoodWASHINGTON511997
IndexWASHINGTON501971
PomonaWASHINGTON501999
Mt HoodOREGON492024
YakimaWASHINGTON472024
LakeviewOREGON462024
DeschutesOREGON452024

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