Species · Alaska · BBS 2025 Release · 1966–2024
Pine Siskin Population Trend in Alaska
Pine Siskin in Alaska has collapsed: down 85% on the route-weighted index since 1974.
-85%Since 1974
75Routes In State
48Years
Notable Pine Siskin Trends in Alaska
long arc declinecomputed index
Pine Siskin has collapsed in Alaska: down 85% on the route-weighted index since 1974.
Pine Siskin Population Forecast in Alaska
If the recent trend holds, Pine Siskin in Alaska is projected to fall about 73% by 2029 — from 2.9 in 2024 to a central estimate of 0.78 (95% range 0.00–11). A 5-year backtest shows a typical error of ±46.8%, with 100% of held-out values landing inside the 95% band.
-73%Change by 2029
0.78Projected 2029 index
0.00–1195% range
±46.8%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 1.3 | 0.00 | 11 |
| 2026 | 1.2 | 0.00 | 11 |
| 2027 | 1.1 | 0.00 | 11 |
| 2028 | 0.92 | 0.00 | 11 |
| 2029 | 0.78 | 0.00 | 11 |
Pine Siskin Survey Routes in Alaska
| Hope | 68 | 2024 | 1985 |
| Yakutat (Short) | 53 | 1984 | 1984 |
| Sitka (Short) | 46 | 1992 | 1984 |
| Homer | 36 | 1982 | 1977 |
| Thorne Bay | 35 | 2012 | 1989 |
| Seward | 30 | 1992 | 1983 |
| Cordova | 26 | 2021 | 1983 |
| Hyder | 26 | 2009 | 1994 |
| Ft. Richrdsn | 22 | 2023 | 1994 |
| Wrangell (Short) | 21 | 1984 | 1984 |
| Haines | 18 | 2024 | 1972 |
| Matanuska | 18 | 1983 | 1982 |
| Craig | 14 | 2024 | 1983 |
| Sitka | 14 | 2024 | 1993 |
| Ketchikan | 13 | 2022 | 1972 |
| Kenny Lake | 13 | 2024 | 1983 |
| Birch Lake | 12 | 2021 | 2002 |
| Whale Pass | 12 | 2023 | 1997 |
| Yakutat | 12 | 2024 | 1994 |
| Chicken | 9 | 2021 | 2021 |
| Paxson Lake | 8 | 1995 | 1995 |
| Harlequin L. | 8 | 2024 | 1994 |
| Anchor River | 8 | 2024 | 1983 |
| Kachemak | 7 | 2022 | 1987 |
| Moose Pass | 7 | 1992 | 1983 |
Pine Siskin Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.