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

Pine Siskin In Northern Pacific Rainforest

All regionsNorthern Pacific RainforestGeneralists

Pine Siskin in Northern Pacific Rainforest has declined: down 50% on the route-weighted index since 1970.

-50%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 →
142Routes 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 Pine Siskin in Northern Pacific Rainforest. See the full index history below.

Pine Siskin In Northern Pacific Rainforest Population Forecast

If the recent trend holds, Pine Siskin in Northern Pacific Rainforest is projected to fall about 44% by 2029 — from 4.7 in 2024 to a central estimate of 2.6 (95% range 0.00–7.3). A 5-year backtest shows a typical error of ±39.3%, with 100% of held-out values landing inside the 95% band.

-44%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 →
2.6Projected 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 →
0.00–7.395% 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 →
±39.3%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, Pine Siskin in Northern Pacific Rainforest is projected to fall about 44% by 2029 — from 4.7 in 2024 to a central estimate of 2.6 (95% range 0.00–7.3). A 5-year backtest shows a typical error of ±39.3%, 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 →
20252.80.007.5
20262.80.007.5
20272.70.007.4
20282.70.007.4
20292.60.007.3

Routes In Northern Pacific Rainforest

Routes recording Pine Siskin 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 →
Mt RainierWASHINGTON722019
HopeALASKA682024
Yakutat (Short)ALASKA531984
Mt. AdamsWASHINGTON522024
Sitka (Short)ALASKA461992
Vashon Is.WASHINGTON362024
Thorne BayALASKA352012
SewardALASKA301992
CordovaALASKA262021
HyderALASKA262009
Port AngelesWASHINGTON222024
Wrangell (Short)ALASKA211984
IssaquahWASHINGTON201987
HainesALASKA182024
HoneydewCALIFORNIA162017
Hay ForkCALIFORNIA152008
Hurricane RgWASHINGTON152024
CraigALASKA142024
SitkaALASKA142024
KetchikanALASKA132022
YakutatALASKA122024
Whale PassALASKA122023
Offield MtnCALIFORNIA92009
Burnt RanchCALIFORNIA92016
GazelleCALIFORNIA92001

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