Species · Alaska · BBS 2025 Release · 1966–2024
Parasitic Jaeger Population Trend in Alaska
Parasitic Jaeger in Alaska has collapsed: down 88% on the route-weighted index since 1985.
-88%Since 1985
20Routes In State
39Years
Notable Parasitic Jaeger Trends in Alaska
long arc declinecomputed index
Parasitic Jaeger has collapsed in Alaska: down 88% on the route-weighted index since 1985.
Parasitic Jaeger Population Forecast in Alaska
If the recent trend holds, Parasitic Jaeger in Alaska is projected to stay roughly flat through 2029, near 0.00 (95% range 0.00–0.27). A 5-year backtest shows a typical error of ±252.5%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2029
0.00Projected 2029 index
0.00–0.2795% range
±252.5%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.00 | 0.00 | 0.27 |
| 2026 | 0.00 | 0.00 | 0.27 |
| 2027 | 0.00 | 0.00 | 0.27 |
| 2028 | 0.00 | 0.00 | 0.27 |
| 2029 | 0.00 | 0.00 | 0.27 |
Parasitic Jaeger Survey Routes in Alaska
| Copper River | 5 | 2011 | 2003 |
| Utqiagvik | 3 | 2023 | 2022 |
| Tupuknuk | 3 | 1995 | 1995 |
| King Salmon | 3 | 2023 | 1995 |
| Kotzebue (Short) | 3 | 1986 | 1986 |
| Teller | 2 | 2017 | 1993 |
| Kotzebue | 2 | 2019 | 2002 |
| Cold Bay | 2 | 2024 | 1995 |
| Adak | 2 | 2001 | 1983 |
| Chiniak | 1 | 1989 | 1989 |
| Cape Nome | 1 | 2018 | 1993 |
| Council | 1 | 2009 | 1996 |
| Galbraith L. | 1 | 2022 | 2022 |
| Kalifonsky | 1 | 2015 | 2015 |
| Nome | 1 | 2012 | 1995 |
| Salmon Lake | 1 | 1998 | 1997 |
| St. Mary'S | 1 | 2012 | 1994 |
| Red Dog | 1 | 2023 | 2023 |
| Cold Bay (Short) | 1 | 1992 | 1991 |
| Yakutat | 1 | 1999 | 1994 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.