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

Pine Grosbeak In BCR 4

All regionsBCR 4Generalists

Pine Grosbeak in BCR 4 has fallen sharply: down 66% on the route-weighted index since 1978.

-66%Since 1978
47Routes In Region
44Years

Notable Signals

long arc declinecomputed index

Pine Grosbeak has fallen sharply in BCR 4: down 66% on the route-weighted index since 1978.

Forecast

If the recent trend holds, Pine Grosbeak in BCR 4 is projected to fall about 67% by 2029 — from 0.42 in 2024 to a central estimate of 0.14 (95% range 0.00–1.1). A 5-year backtest shows a typical error of ±52.5%, with 100% of held-out values landing inside the 95% band.

-67%Change by 2029
0.14Projected 2029 index
0.00–1.195% range
±52.5%Backtest error
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 index95% low95% high
20250.230.001.1
20260.210.001.1
20270.180.001.1
20280.160.001.1
20290.140.001.1

Routes In BCR 4

Routes recording Pine Grosbeak in BCR 4.
Unalakleet RiverALASKA82024
Nabesna RoadALASKA71989
Seven LakesALASKA52023
ChistochinaALASKA42023
NorthwayALASKA42016
Swan Lake RdALASKA42023
Kanuti CanynALASKA42004
Anvik RiverALASKA42023
SourdoughALASKA32021
Bear CreekALASKA31988
Nicholai SlALASKA32002
Mt. FairplayALASKA32014
Kobuk River (Short)ALASKA31992
Paxson LakeALASKA31995
CircleALASKA22002
HomerALASKA21982
TonsinaALASKA22018
Anchor RiverALASKA22017
CohoeALASKA22023
KachemakALASKA22024
McgrathALASKA21997
Manley Ht SpALASKA22019
Ft. RichrdsnALASKA22005
Galena (Short)ALASKA22019
Mccarthy Rd2ALASKA22024

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