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

Fox Sparrow In Northern Pacific Rainforest

All regionsNorthern Pacific RainforestGeneralists

Fox Sparrow in Northern Pacific Rainforest has risen sharply: up 71% on the route-weighted index since 1970.

+71%Since 1970
79Routes In Region
56Years

Notable Signals

long arc increasecomputed index

Fox Sparrow has risen sharply in Northern Pacific Rainforest: up 71% on the route-weighted index since 1970.

Forecast

If the recent trend holds, Fox Sparrow in Northern Pacific Rainforest is projected to rise about 79% by 2029 — from 2.7 in 2024 to a central estimate of 4.9 (95% range 2.9–6.9). A 5-year backtest shows a typical error of ±57.5%, with 60% of held-out values landing inside the 95% band.

+79%Change by 2029
4.9Projected 2029 index
2.9–6.995% range
±57.5%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
20254.72.76.6
20264.72.86.7
20274.82.86.7
20284.82.96.8
20294.92.96.9

Routes In Northern Pacific Rainforest

Routes recording Fox Sparrow in Northern Pacific Rainforest.
Copper RiverALASKA1022011
Thompson PasALASKA752024
South Fork MtnCALIFORNIA272022
HopeALASKA262024
Chichagof IsALASKA232024
Sheep MtnALASKA222017
Harlequin L.ALASKA202024
Pilot CreekCALIFORNIA191996
YakutatALASKA182024
SewardALASKA171992
HoonahALASKA132024
Alpenglow (Short)ALASKA132012
PetersburgALASKA121987
Sitka (Short)ALASKA121992
Elmendorf (Short)ALASKA111985
Moose PassALASKA101992
DirigioCALIFORNIA102014
Stikine RiverALASKA92024
GazelleCALIFORNIA81996
Yakutat (Short)ALASKA61984
Mt ShastaCALIFORNIA62019
RuchOREGON61995
Thorne BayALASKA52010
Kuiu IslandALASKA52010
Lonesome RdgCALIFORNIA52014

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