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

Red Crossbill In Great Basin

All regionsGreat BasinForest birds

Red Crossbill in Great Basin has declined: down 44% on the route-weighted index since 1970.

-44%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 →
77Routes 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 Red Crossbill in Great Basin. See the full index history below.

Red Crossbill In Great Basin Population Forecast

If the recent trend holds, Red Crossbill in Great Basin is projected to fall about 38% by 2030 — from 2.2 in 2025 to a central estimate of 1.4 (95% range 0.00–3.3). A 5-year backtest shows a typical error of ±76.2%, with 80% of held-out values landing inside the 95% band.

-38%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 →
1.4Projected 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 →
0.00–3.395% 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 →
±76.2%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, Red Crossbill in Great Basin is projected to fall about 38% by 2030 — from 2.2 in 2025 to a central estimate of 1.4 (95% range 0.00–3.3). A 5-year backtest shows a typical error of ±76.2%, with 80% 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 →
20261.40.003.3
20271.40.003.3
20281.40.003.3
20291.40.003.3
20301.40.003.3

Routes In Great Basin

Routes recording Red Crossbill 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 →
SistersOREGON722025
Camp ShermanOREGON511996
ChinchaloOREGON362025
EllensburgWASHINGTON282025
MaldenWASHINGTON282025
WilburWASHINGTON232022
Turnbull NwrWASHINGTON212021
TionestaCALIFORNIA202021
Bald Mtn.OREGON202025
MazamaWASHINGTON162022
TriangleIDAHO142021
PauninaOREGON132025
Index 2WASHINGTON132022
SnowdenWASHINGTON112025
Davis LakeOREGON102025
RimrockWASHINGTON102025
Ewan 2WASHINGTON102025
Bly 2OREGON92024
Crowder FlatCALIFORNIA82019
DeschutesOREGON82022
L. WenatcheeWASHINGTON82025
Cascade RivWASHINGTON82000
Clear Lk ResCALIFORNIA72014
Lake ChelanWASHINGTON72025
HackamoreCALIFORNIA62010

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