BirdAnalyst
Species · BCR 4 · BBS 2025 Release · 1966–2024

Northern Waterthrush In BCR 4

All regionsBCR 4Forest birds

Northern Waterthrush in BCR 4 has held roughly steady: up 5% on the route-weighted index since 1976.

+5%Since 1976
63Routes In Region
46Years

Notable Signals

No notable trend signals for Northern Waterthrush in BCR 4. See the full index history below.

Forecast

If the recent trend holds, Northern Waterthrush in BCR 4 is projected to fall about 20% by 2029 — from 16 in 2024 to a central estimate of 13 (95% range 4.2–22). A 5-year backtest shows a typical error of ±13.3%, with 100% of held-out values landing inside the 95% band.

-20%Change by 2029
13Projected 2029 index
4.2–2295% range
±13.3%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
2025133.922
2026134.022
2027134.122
2028134.222
2029134.222

Routes In BCR 4

Routes recording Northern Waterthrush in BCR 4.
Anvik RiverALASKA1112024
Unalakleet RiverALASKA1072024
Mud RiverALASKA792024
Hather CreekALASKA622024
Goose BayALASKA461982
Nicholai SlALASKA382024
Koyukuk Riv.ALASKA322001
Galena (Short)ALASKA252024
Kobuk River (Short)ALASKA241992
Chena RiverALASKA201988
Kanuti LakeALASKA202024
PetersvilleALASKA192024
Bear CreekALASKA181991
RubyALASKA152024
ChistochinaALASKA142024
Hatcher PassALASKA132024
WasillaALASKA131983
Kenny LakeALASKA122024
Kanuti CanynALASKA122024
WillowALASKA112024
TatalinaALASKA102019
MatanuskaALASKA91983
CottonwoodALASKA81990
Mccarthy Rd2ALASKA82024
CircleALASKA72024

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