BirdAnalyst
Species · BCR 5 · BBS 2026 Release · 1966–2025

Savannah Sparrow In Northern Pacific Rainforest

All regionsNorthern Pacific RainforestGrassland birds

Savannah Sparrow in Northern Pacific Rainforest has edged down: down 13% on the route-weighted index since 1970.

-13%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 →
100Routes 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 Savannah Sparrow in Northern Pacific Rainforest. See the full index history below.

Savannah Sparrow In Northern Pacific Rainforest Population Forecast

If the recent trend holds, Savannah Sparrow in Northern Pacific Rainforest is projected to rise about 56% by 2030 — from 2.4 in 2025 to a central estimate of 3.8 (95% range 1.6–5.9). A 5-year backtest shows a typical error of ±60.4%, with 100% of held-out values landing inside the 95% band.

+56%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 →
3.8Projected 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 →
1.6–5.995% 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 →
±60.4%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, Savannah Sparrow in Northern Pacific Rainforest is projected to rise about 56% by 2030 — from 2.4 in 2025 to a central estimate of 3.8 (95% range 1.6–5.9). A 5-year backtest shows a typical error of ±60.4%, 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 →
20263.91.76.1
20273.91.76.0
20283.81.76.0
20293.81.76.0
20303.81.65.9

Routes In Northern Pacific Rainforest

Routes recording Savannah Sparrow in Northern Pacific Rainforest.
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 →
Port AngelesWASHINGTON522025
Bay ViewWASHINGTON292017
DaytonOREGON192025
AdairOREGON172025
South ElmaWASHINGTON172024
CamasWASHINGTON162009
MendotaWASHINGTON151988
Mendota 2WASHINGTON152000
Moose PassALASKA141992
Elmendorf (Short)ALASKA121985
Warm BeachWASHINGTON122017
Rio DellCALIFORNIA102012
SalemOREGON102025
CarnationWASHINGTON102024
McchordWASHINGTON102015
Warm Beach 2WASHINGTON92024
Copper RiverALASKA82011
YrekaCALIFORNIA82019
McminnvilleOREGON82025
Sheep MtnALASKA72025
Crescent CtyCALIFORNIA72025
HoneydewCALIFORNIA72017
CordovaALASKA62024
SvensenOREGON61992
RaymondWASHINGTON62021

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