BirdAnalyst
Species · BCR 2 · BBS 2025 Release · 1966–2024

Pacific Wren In BCR 2

All regionsBCR 2Forest birds

Pacific Wren in BCR 2 has fallen sharply: down 51% on the route-weighted index since 1985.

-51%Since 1985
3Routes In Region
35Years

Notable Signals

long arc declinecomputed index

Pacific Wren has fallen sharply in BCR 2: down 51% on the route-weighted index since 1985.

Forecast

If the recent trend holds, Pacific Wren in BCR 2 is projected to fall about 29% by 2029 — from 12 in 2024 to a central estimate of 8.5 (95% range 0.00–24). A 5-year backtest shows a typical error of ±32.3%, with 100% of held-out values landing inside the 95% band.

-29%Change by 2029
8.5Projected 2029 index
0.00–2495% range
±32.3%Backtest error
19832029
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
20258.20.0024
20268.30.0024
20278.40.0024
20288.40.0024
20298.50.0024

Routes In BCR 2

Routes recording Pacific Wren in BCR 2.
ChiniakALASKA612024
Kodiak 2ALASKA462024
KodiakALASKA121984

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