BirdAnalyst
Species · BCR 4 · BBS 2025 Release · 1966–2024

Pine Siskin In BCR 4

All regionsBCR 4Generalists

Pine Siskin in BCR 4 has collapsed: down 91% on the route-weighted index since 1978.

-91%Since 1978
41Routes In Region
45Years

Notable Signals

long arc declinecomputed index

Pine Siskin has collapsed in BCR 4: down 91% on the route-weighted index since 1978.

Forecast

If the recent trend holds, Pine Siskin in BCR 4 is projected to fall about 100% by 2029 — from 1.1 in 2024 to a central estimate of 0.00 (95% range 0.00–8.0). A 5-year backtest shows a typical error of ±79.9%, with 100% of held-out values landing inside the 95% band.

-100%Change by 2029
0.00Projected 2029 index
0.00–8.095% range
±79.9%Backtest error
19752029
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected index95% low95% high
20250.150.008.1
20260.030.008.0
20270.000.008.0
20280.000.008.0
20290.000.008.0

Routes In BCR 4

Routes recording Pine Siskin in BCR 4.
HomerALASKA361982
Ft. RichrdsnALASKA222023
MatanuskaALASKA181983
Kenny LakeALASKA132024
Birch LakeALASKA122021
ChickenALASKA92021
Anchor RiverALASKA82024
Paxson LakeALASKA81995
KachemakALASKA72022
Chena Hot SpALASKA61987
KuskulanaALASKA62024
LivengoodALASKA52015
L SalchaALASKA52003
NebesnaALASKA41975
KalifonskyALASKA42023
Nabesna RoadALASKA42015
Goose BayALASKA31982
SourdoughALASKA32018
SavageALASKA32015
Hatcher PassALASKA32024
DeltaALASKA32024
Mccarthy Rd2ALASKA32024
EagleALASKA22024
NorthwayALASKA21995
WillowALASKA22021

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