Species · BCR 2 · BBS 2025 Release · 1966–2024
Golden-crowned Kinglet In BCR 2
Golden-crowned Kinglet in BCR 2 has increased: up 27% on the route-weighted index since 1987.
+27%Since 1987
5Routes In Region
28Years
Notable Signals
No notable trend signals for Golden-crowned Kinglet in BCR 2. See the full index history below.
Forecast
If the recent trend holds, Golden-crowned Kinglet in BCR 2 is projected to fall about 61% by 2029 — from 2.0 in 2024 to a central estimate of 0.78 (95% range 0.00–2.4). A 5-year backtest shows a typical error of ±75.4%, with 100% of held-out values landing inside the 95% band.
-61%Change by 2029
0.78Projected 2029 index
0.00–2.495% range
±75.4%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.78 | 0.00 | 2.4 |
| 2026 | 0.78 | 0.00 | 2.4 |
| 2027 | 0.78 | 0.00 | 2.4 |
| 2028 | 0.78 | 0.00 | 2.4 |
| 2029 | 0.78 | 0.00 | 2.4 |
Routes In BCR 2
| Chiniak | ALASKA | 12 | 2024 |
| Kodiak 2 | ALASKA | 6 | 2024 |
| Kodiak | ALASKA | 1 | 1984 |
| Katmai N.P. | ALASKA | 1 | 2005 |
| Dillingham | ALASKA | 1 | 2015 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.