Species · Alaska · BBS 2025 Release · 1966–2024
Gray-crowned Rosy-Finch Population Trend in Alaska
Gray-crowned Rosy-Finch in Alaska has collapsed: down 92% on the route-weighted index since 1985.
-92%Since 1985
8Routes In State
18Years
Notable Gray-crowned Rosy-Finch Trends in Alaska
long arc declinecomputed index
Gray-crowned Rosy-Finch has collapsed in Alaska: down 92% on the route-weighted index since 1985.
Gray-crowned Rosy-Finch Population Forecast in Alaska
If the recent trend holds, Gray-crowned Rosy-Finch in Alaska is projected to stay roughly flat through 2021, near 0.00 (95% range 0.00–0.48). A 5-year backtest shows a typical error of ±756.9%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2021
0.00Projected 2021 index
0.00–0.4895% range
±756.9%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2017 | 0.00 | 0.00 | 0.48 |
| 2018 | 0.00 | 0.00 | 0.48 |
| 2019 | 0.00 | 0.00 | 0.48 |
| 2020 | 0.00 | 0.00 | 0.48 |
| 2021 | 0.00 | 0.00 | 0.48 |
Gray-crowned Rosy-Finch Survey Routes in Alaska
| Hyder | 5 | 1994 | 1994 |
| Lake Louise | 4 | 2007 | 2007 |
| Chiniak | 2 | 2006 | 2006 |
| Adak | 2 | 2001 | 1983 |
| Cold Bay (Short) | 1 | 1984 | 1984 |
| Skagway | 1 | 1994 | 1993 |
| Chichagof Is | 1 | 2016 | 2016 |
| Thorne Bay | 1 | 1989 | 1989 |
Gray-crowned Rosy-Finch Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.