BirdAnalyst
Species · BCR 3 · BBS 2025 Release · 1966–2024

Fox Sparrow In BCR 3

All regionsBCR 3Generalists

Fox Sparrow in BCR 3 has surged: up 145% on the route-weighted index since 1996.

+145%Since 1996
4Routes In Region
30Years

Notable Signals

long arc increasecomputed index

Fox Sparrow has surged in BCR 3: up 145% on the route-weighted index since 1996.

Forecast

If the recent trend holds, Fox Sparrow in BCR 3 is projected to stay roughly flat through 2029, near 5.4 (95% range 2.2–8.6). A 5-year backtest shows a typical error of ±44.2%, with 100% of held-out values landing inside the 95% band.

-1%Change by 2029
5.4Projected 2029 index
2.2–8.695% range
±44.2%Backtest error
19942029
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
20254.91.78.1
20265.01.88.2
20275.22.08.4
20285.32.18.5
20295.42.28.6

Routes In BCR 3

Routes recording Fox Sparrow in BCR 3.
Red DogALASKA142024
Dietrich CmpALASKA42024
Happy ValleyALASKA42024
Galbraith L.ALASKA12012

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