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

Townsend's Warbler In Northern Pacific Rainforest

All regionsNorthern Pacific RainforestForest birds

Townsend's Warbler in Northern Pacific Rainforest has surged: up 15× on the route-weighted index since 1970.

15×Since 1970
88Routes In Region
56Years

Notable Signals

long arc increasecomputed index

Townsend's Warbler has surged in Northern Pacific Rainforest: up 15× on the route-weighted index since 1970.

Forecast

If the recent trend holds, Townsend's Warbler in Northern Pacific Rainforest is projected to fall about 23% by 2029 — from 7.7 in 2024 to a central estimate of 5.9 (95% range 4.1–7.8). A 5-year backtest shows a typical error of ±18.5%, with 80% of held-out values landing inside the 95% band.

-23%Change by 2029
5.9Projected 2029 index
4.1–7.895% range
±18.5%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
20255.63.77.4
20265.73.87.5
20275.73.97.6
20285.84.07.7
20295.94.17.8

Routes In Northern Pacific Rainforest

Routes recording Townsend's Warbler in Northern Pacific Rainforest.
Thorne Bay 2ALASKA942024
Whale PassALASKA812024
CraigALASKA792024
Thorne BayALASKA552012
KetchikanALASKA512022
Chichagof IsALASKA512024
Kuiu IslandALASKA462010
Mitkof IsleALASKA382024
HainesALASKA372024
Moose PassALASKA371992
Hurricane RgWASHINGTON362024
SewardALASKA351992
HoonahALASKA302024
Zimovia StrtALASKA292024
SitkaALASKA252024
Kenai Lake (Short)ALASKA171992
PetersburgALASKA161987
Cedar FallsWASHINGTON162014
HopeALASKA152024
ZaremboALASKA152024
TaholahWASHINGTON152022
ShellrockOREGON142023
HyderALASKA132009
GreenwaterWASHINGTON112024
JuneauALASKA102024

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