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

Chipping Sparrow In Northern Pacific Rainforest

All regionsNorthern Pacific RainforestGeneralists

Chipping Sparrow in Northern Pacific Rainforest has collapsed: down 85% on the route-weighted index since 1970.

-85%Since 1970
114Routes In Region
56Years

Notable Signals

long arc declinecomputed index

Chipping Sparrow has collapsed in Northern Pacific Rainforest: down 85% on the route-weighted index since 1970.

Forecast

If the recent trend holds, Chipping Sparrow in Northern Pacific Rainforest is projected to fall about 100% by 2029 — from 1.6 in 2024 to a central estimate of 0.00 (95% range 0.00–2.5). A 5-year backtest shows a typical error of ±91.3%, with 100% of held-out values landing inside the 95% band.

-100%Change by 2029
0.00Projected 2029 index
0.00–2.595% range
±91.3%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
20250.280.002.8
20260.180.002.7
20270.080.002.6
20280.000.002.5
20290.000.002.5

Routes In Northern Pacific Rainforest

Routes recording Chipping Sparrow in Northern Pacific Rainforest.
AlderpointCALIFORNIA202012
RainierWASHINGTON192019
McchordWASHINGTON172015
Martins FyCALIFORNIA152009
MccloudCALIFORNIA142021
UmpquaOREGON142024
MendotaWASHINGTON141988
DaytonOREGON92024
Mt. AdamsWASHINGTON92024
CarrvilleCALIFORNIA81970
South Fork MtnCALIFORNIA82022
Elk LakeOREGON82024
GreenOREGON82024
Vashon Is.WASHINGTON82024
Mt ShastaCALIFORNIA72019
Pilot CreekCALIFORNIA71996
AdairOREGON72024
Shasta LakeCALIFORNIA62007
WhiskeytownCALIFORNIA62007
French GulchCALIFORNIA62011
Secret ValOREGON62022
SelmaOREGON62024
South ElmaWASHINGTON62024
LongvaleCALIFORNIA52021
OrleansCALIFORNIA51989

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