Species · Florida · BBS 2025 Release · 1966–2024
Herring Gull Population Trend in Florida
Herring Gull in Florida has fallen sharply: down 59% on the route-weighted index since 1968.
-59%Since 1968
9Routes In State
33Years
Notable Herring Gull Trends in Florida
long arc declinecomputed index
Herring Gull has fallen sharply in Florida: down 59% on the route-weighted index since 1968.
Herring Gull Population Forecast in Florida
If the recent trend holds, Herring Gull in Florida is projected to fall about 100% by 2027 — from 0.07 in 2022 to a central estimate of 0.00 (95% range 0.00–0.18). A 5-year backtest shows a typical error of ±90.4%, with 100% of held-out values landing inside the 95% band.
-100%Change by 2027
0.00Projected 2027 index
0.00–0.1895% range
±90.4%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2023 | 0.00 | 0.00 | 0.19 |
| 2024 | 0.00 | 0.00 | 0.18 |
| 2025 | 0.00 | 0.00 | 0.18 |
| 2026 | 0.00 | 0.00 | 0.18 |
| 2027 | 0.00 | 0.00 | 0.18 |
Herring Gull Survey Routes in Florida
| Vero Beach | 8 | 2013 | 2008 |
| Pleasant Grove 2 | 4 | 2022 | 2010 |
| Homestead | 2 | 2015 | 2015 |
| Ft Waltn Bch | 1 | 2009 | 1966 |
| Port St Joe | 1 | 1990 | 1990 |
| Ft Gadsden | 1 | 1988 | 1975 |
| St Augustine | 1 | 1969 | 1969 |
| Santa Rosa | 1 | 1989 | 1988 |
| Scottsmoor | 1 | 2009 | 2009 |
Herring Gull Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.