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Species · BCR 14 · BBS 2025 Release · 1966–2024

Pine Siskin In Atlantic Northern Forest

All regionsAtlantic Northern ForestGeneralists

Pine Siskin in Atlantic Northern Forest has collapsed: down 90% on the route-weighted index since 1968.

-90%Since 1968TrendPercent 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 →
103Routes 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 →
52YearsYears 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 →

long arc declinecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Pine Siskin has collapsed in Atlantic Northern Forest: down 89% on the route-weighted index since 1968.

Pine Siskin In Atlantic Northern Forest Population Forecast

If the recent trend holds, Pine Siskin in Atlantic Northern Forest is projected to stay roughly flat through 2029, near 0.14 (95% range 0.00–2.0). A 5-year backtest shows a typical error of ±872.4%, 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 →
0.14Projected 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 →
0.00–2.095% 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 →
±872.4%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, Pine Siskin in Atlantic Northern Forest is projected to stay roughly flat through 2029, near 0.14 (95% range 0.00–2.0). A 5-year backtest shows a typical error of ±872.4%, with 100% of held-out values landing inside the 95% band.19662029
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 →
20250.190.002.1
20260.180.002.1
20270.170.002.1
20280.150.002.0
20290.140.002.0

Routes In Atlantic Northern Forest

Routes recording Pine Siskin in Atlantic Northern Forest.
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 →
CambridgeMAINE902001
Hope FallsNEW-YORK301968
Dexter LakeNEW-YORK251975
GreensboroVERMONT232005
HartfordMAINE202016
DannemoraNEW-YORK201995
ChesterfieldMASSACHUSETTS171988
Seboomook LkMAINE151997
S ReadingVERMONT142001
Pillsbury PdMAINE131968
Heron LakeMAINE132001
MckeeverNEW-YORK131992
NorthfieldMAINE121980
CharlestonMAINE121992
BoundaryMAINE101997
FranconiaNEW-HAMPSHIRE102001
ClarksvilleNEW-HAMPSHIRE102009
HighmarketNEW-YORK72006
HardwickVERMONT71985
AuroraMAINE61992
HudsonMAINE61992
TelosMAINE61995
Crawford NotNEW-HAMPSHIRE61971
HancockMAINE52012
YankeetuladiMAINE51997

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