Species · BCR 5 · BBS 2025 Release · 1966–2024
Boreal Chickadee In Northern Pacific Rainforest
Boreal Chickadee in Northern Pacific Rainforest has declined: down 30% on the route-weighted index since 1991.
-30%Since 1991
7Routes In Region
21Years
Notable Signals
No notable trend signals for Boreal Chickadee in Northern Pacific Rainforest. See the full index history below.
Forecast
If the recent trend holds, Boreal Chickadee in Northern Pacific Rainforest is projected to fall about 70% by 2029 — from 0.13 in 2024 to a central estimate of 0.04 (95% range 0.00–0.16). A 5-year backtest shows a typical error of ±62.5%, with 80% of held-out values landing inside the 95% band.
-70%Change by 2029
0.04Projected 2029 index
0.00–0.1695% range
±62.5%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.04 | 0.00 | 0.16 |
| 2026 | 0.04 | 0.00 | 0.16 |
| 2027 | 0.04 | 0.00 | 0.16 |
| 2028 | 0.04 | 0.00 | 0.16 |
| 2029 | 0.04 | 0.00 | 0.16 |
Routes In Northern Pacific Rainforest
| Thorne Bay | ALASKA | 15 | 1991 |
| Hope | ALASKA | 10 | 2024 |
| Moose Pass | ALASKA | 3 | 1985 |
| Thompson Pas | ALASKA | 2 | 2022 |
| Cordova | ALASKA | 1 | 1983 |
| Sheep Mtn | ALASKA | 1 | 2017 |
| Alpenglow (Short) | ALASKA | 1 | 2004 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.