Species · Alaska · BBS 2025 Release · 1966–2024
Horned Grebe Population Trend in Alaska
Horned Grebe in Alaska has collapsed: down 84% on the route-weighted index since 1987.
-84%Since 1987
24Routes In State
33Years
Notable Horned Grebe Trends in Alaska
long arc declinecomputed index
Horned Grebe has collapsed in Alaska: down 84% on the route-weighted index since 1987.
Horned Grebe Population Forecast in Alaska
If the recent trend holds, Horned Grebe in Alaska is projected to stay roughly flat through 2028, near 0.00 (95% range 0.00–0.16). A 5-year backtest shows a typical error of ±233.3%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2028
0.00Projected 2028 index
0.00–0.1695% range
±233.3%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2024 | 0.00 | 0.00 | 0.16 |
| 2025 | 0.00 | 0.00 | 0.16 |
| 2026 | 0.00 | 0.00 | 0.16 |
| 2027 | 0.00 | 0.00 | 0.16 |
| 2028 | 0.00 | 0.00 | 0.16 |
Horned Grebe Survey Routes in Alaska
| Chena Hot Spring 2 | 3 | 2002 | 2000 |
| Birch Lake | 2 | 1993 | 1993 |
| Slana | 2 | 2013 | 1997 |
| Northway | 2 | 2013 | 1989 |
| Mccarthy Rd2 | 2 | 1995 | 1995 |
| Galbraith L. | 2 | 1997 | 1997 |
| L Salcha | 2 | 1988 | 1988 |
| Ft. Richrdsn | 2 | 2022 | 1995 |
| Cordova | 2 | 2022 | 1993 |
| Dietrich Cmp | 2 | 1994 | 1994 |
| Circle | 1 | 2006 | 2002 |
| Nebesna | 1 | 1975 | 1975 |
| Nabesna Road | 1 | 2006 | 1991 |
| Chistochina | 1 | 2008 | 1990 |
| Monahan | 1 | 1996 | 1983 |
| Toklat | 1 | 2009 | 2008 |
| Coldfoot | 1 | 1995 | 1995 |
| Kenny Lake | 1 | 2018 | 1989 |
| Sheep Mtn | 1 | 2007 | 1994 |
| Sourdough | 1 | 2021 | 2021 |
| Red Dog | 1 | 2023 | 2023 |
| Copper River | 1 | 2011 | 1993 |
| Swan Lake Rd | 1 | 1987 | 1987 |
| Goodnews Bay | 1 | 2002 | 2002 |
Horned Grebe Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.