BirdAnalyst
Species · BCR 5 · BBS 2025 Release · 1966–2024

Sora In Northern Pacific Rainforest

All regionsNorthern Pacific RainforestWetland birds

Sora in Northern Pacific Rainforest has held roughly steady: down 6% on the route-weighted index since 1986.

-6%Since 1986TrendPercent 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 →
22Routes 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 →
29YearsYears 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 Sora in Northern Pacific Rainforest. See the full index history below.

Sora In Northern Pacific Rainforest Population Forecast

If the recent trend holds, Sora in Northern Pacific Rainforest is projected to stay roughly flat through 2029, near 0.02 (95% range 0.00–0.06). A 5-year backtest shows a typical error of ±49.1%, with 100% of held-out values landing inside the 95% band.

n/aChange 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 →
0.02Projected 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 →
0.00–0.0695% 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 →
±49.1%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, Sora in Northern Pacific Rainforest is projected to stay roughly flat through 2029, near 0.02 (95% range 0.00–0.06). A 5-year backtest shows a typical error of ±49.1%, with 100% of held-out values landing inside the 95% band.19742029
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 →
20250.020.000.06
20260.020.000.06
20270.020.000.06
20280.020.000.06
20290.020.000.06

Routes In Northern Pacific Rainforest

Routes recording Sora 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 →
MendotaWASHINGTON31977
CarnationWASHINGTON32008
AdairOREGON22022
ProspectOREGON22013
ScappooseOREGON22010
Bay ViewWASHINGTON21998
HainesALASKA12024
Crescent CtyCALIFORNIA12024
YrekaCALIFORNIA12014
ScioOREGON11986
Elk LakeOREGON11993
CanbyOREGON11999
Blue RiverOREGON12002
CoquilleOREGON12023
McminnvilleOREGON11994
Port AngelesWASHINGTON11992
KamilcheWASHINGTON11977
EverettWASHINGTON12024
South ElmaWASHINGTON12003
Mt St HelensWASHINGTON12005
Mendota 2WASHINGTON11993
Mendota 3WASHINGTON12022

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