Species · California · BBS 2025 Release · 1966–2024
American Coot Population Trend in California
American Coot in California has edged up: up 23% on the route-weighted index since 1970.
+23%Since 1970
123Routes In State
56Years
Notable American Coot Trends in California
No notable trend signals for American Coot in California. See the full index history below.
American Coot Population Forecast in California
If the recent trend holds, American Coot in California is projected to rise about 48% by 2029 — from 1.5 in 2024 to a central estimate of 2.2 (95% range 0.00–6.4). A 5-year backtest shows a typical error of ±863.6%, with 100% of held-out values landing inside the 95% band.
+48%Change by 2029
2.2Projected 2029 index
0.00–6.495% range
±863.6%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 2.3 | 0.00 | 6.5 |
| 2026 | 2.3 | 0.00 | 6.5 |
| 2027 | 2.3 | 0.00 | 6.4 |
| 2028 | 2.3 | 0.00 | 6.4 |
| 2029 | 2.2 | 0.00 | 6.4 |
American Coot Survey Routes in California
| Dorris | 230 | 2019 | 1972 |
| Likely | 92 | 2024 | 1979 |
| Carrizo Pln | 88 | 1978 | 1978 |
| Cp. Pendleton | 45 | 1991 | 1972 |
| Big Bear | 16 | 1986 | 1969 |
| Coyote | 13 | 2024 | 1972 |
| Athlone | 10 | 1989 | 1982 |
| Lockwood | 9 | 2024 | 1974 |
| Collegeville | 8 | 1987 | 1972 |
| Benton | 8 | 2024 | 1974 |
| Green Valley | 8 | 2012 | 2012 |
| Ventucopa | 7 | 1997 | 1992 |
| Glenn | 7 | 2015 | 1971 |
| Crowder Flat | 7 | 2019 | 2002 |
| Mesa Grande | 6 | 2005 | 1999 |
| Ora Loma | 6 | 2023 | 1972 |
| Clear Lk Res | 5 | 1990 | 1984 |
| Pescadero | 5 | 2024 | 1992 |
| Poloma | 5 | 2023 | 1993 |
| Madeline | 5 | 2024 | 1997 |
| Rumsey | 4 | 1988 | 1988 |
| Tres Pinos | 4 | 2002 | 1996 |
| Foster Park | 4 | 1994 | 1968 |
| Lake Hemet | 4 | 1981 | 1981 |
| Laytonville | 4 | 1990 | 1990 |
American Coot Population Trend in Other States
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Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.