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

Downy Woodpecker In Great Basin

All regionsGreat BasinForest birds

Downy Woodpecker in Great Basin has declined: down 27% on the route-weighted index since 1970.

-27%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 →
102Routes 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 Downy Woodpecker in Great Basin. See the full index history below.

Downy Woodpecker In Great Basin Population Forecast

If the recent trend holds, Downy Woodpecker in Great Basin is projected to fall about 16% by 2029 — from 0.12 in 2024 to a central estimate of 0.10 (95% range 0.00–0.20). A 5-year backtest shows a typical error of ±53.2%, with 100% of held-out values landing inside the 95% band.

-16%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 →
0.10Projected 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 →
0.00–0.2095% 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 →
±53.2%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, Downy Woodpecker in Great Basin is projected to fall about 16% by 2029 — from 0.12 in 2024 to a central estimate of 0.10 (95% range 0.00–0.20). A 5-year backtest shows a typical error of ±53.2%, 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 →
20250.100.000.20
20260.100.000.20
20270.100.000.20
20280.100.000.20
20290.100.000.20

Routes In Great Basin

Routes recording Downy Woodpecker 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 →
EwanWASHINGTON41987
NubieberCALIFORNIA32007
WinthropWASHINGTON32013
HackamoreCALIFORNIA22010
Iron GateCALIFORNIA22019
GiffordIDAHO22017
RirieIDAHO22010
TriangleIDAHO22010
HenryIDAHO21977
JarbidgeNEVADA22015
Comins LakeNEVADA22013
Dell SpringOREGON21989
JosephOREGON22019
SistersOREGON22024
NewcastleUTAH22019
TwispWASHINGTON22024
ArdenvoirWASHINGTON21987
Moses LakeWASHINGTON21998
ReardanWASHINGTON22011
RimrockWASHINGTON22005
WapatoWASHINGTON22022
SnowdenWASHINGTON22019
CarltonWASHINGTON22007
MazamaWASHINGTON22022
YakimaWASHINGTON22024

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