Species · BCR 27 · BBS 2025 Release · 1966–2024
Great Black-backed Gull In Southeastern Coastal Plain
Great Black-backed Gull in Southeastern Coastal Plain has fallen sharply: down 75% on the route-weighted index since 1982.
-75%Since 1982
5Routes In Region
18Years
Notable Signals
No notable trend signals for Great Black-backed Gull in Southeastern Coastal Plain. See the full index history below.
Forecast
If the recent trend holds, Great Black-backed Gull in Southeastern Coastal Plain is projected to stay roughly flat through 2026, near 0.00 (95% range 0.00–0.02). A 5-year backtest shows a typical error of ±107.9%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2026
0.00Projected 2026 index
0.00–0.0295% range
±107.9%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2022 | 0.01 | 0.00 | 0.02 |
| 2023 | 0.00 | 0.00 | 0.02 |
| 2024 | 0.00 | 0.00 | 0.02 |
| 2025 | 0.00 | 0.00 | 0.02 |
| 2026 | 0.00 | 0.00 | 0.02 |
Routes In Southeastern Coastal Plain
| Mashoes | NORTH-CAROLINA | 4 | 1982 |
| Merrimon | NORTH-CAROLINA | 1 | 2013 |
| Grandy | NORTH-CAROLINA | 1 | 1974 |
| Milltail Cr | NORTH-CAROLINA | 1 | 2021 |
| Newport | NORTH-CAROLINA | 1 | 2002 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.