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

Red-naped Sapsucker In Great Basin

All regionsGreat BasinForest birds

Red-naped Sapsucker in Great Basin has increased: up 44% on the route-weighted index since 1972.

+44%Since 1972TrendPercent 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 →
59Routes 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 →
50YearsYears 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-naped Sapsucker in Great Basin. See the full index history below.

Red-naped Sapsucker In Great Basin Population Forecast

If the recent trend holds, Red-naped Sapsucker in Great Basin is projected to rise about 119% by 2029 — from 0.10 in 2024 to a central estimate of 0.22 (95% range 0.09–0.35). A 5-year backtest shows a typical error of ±99.6%, with 40% of held-out values landing inside the 95% band.

+119%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 →
0.22Projected 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 →
0.09–0.3595% 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 →
±99.6%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-naped Sapsucker in Great Basin is projected to rise about 119% by 2029 — from 0.10 in 2024 to a central estimate of 0.22 (95% range 0.09–0.35). A 5-year backtest shows a typical error of ±99.6%, with 40% of held-out values landing inside the 95% band.19692029
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 →
20250.210.080.34
20260.210.080.34
20270.210.090.34
20280.220.090.35
20290.220.090.35

Routes In Great Basin

Routes recording Red-naped Sapsucker 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 →
BlyOREGON51995
Barnes ValOREGON41984
WinthropWASHINGTON42022
LeavenworthWASHINGTON42017
Humboldt NfNEVADA32015
Dell SpringOREGON31990
Lapham Res.OREGON32004
RimrockWASHINGTON32016
NighthawkWASHINGTON32024
BakerIDAHO22023
SquirrelIDAHO22024
TriangleIDAHO22014
Magic MtnIDAHO22024
BatesIDAHO22009
JarbidgeNEVADA22013
JosephOREGON22022
LynnUTAH22011
TonasketWASHINGTON22018
EllensburgWASHINGTON22022
CarltonWASHINGTON22022
L. WenatcheeWASHINGTON22010
Davis CreekCALIFORNIA11999
GiffordIDAHO12015
LeadoreIDAHO12024
CratersIDAHO11994

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