Species · BCR 13 · BBS 2025 Release · 1966–2024
Common Gallinule In Lower Great Lakes / St. Lawrence Plain
Common Gallinule in Lower Great Lakes / St. Lawrence Plain has fallen sharply: down 58% on the route-weighted index since 1970.
-58%Since 1970
21Routes In Region
35Years
Notable Signals
No notable trend signals for Common Gallinule in Lower Great Lakes / St. Lawrence Plain. See the full index history below.
Forecast
If the recent trend holds, Common Gallinule in Lower Great Lakes / St. Lawrence Plain is projected to stay roughly flat through 2029, near 0.01 (95% range 0.00–0.04). A 5-year backtest shows a typical error of ±13.2%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2029
0.01Projected 2029 index
0.00–0.0495% range
±13.2%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.01 | 0.00 | 0.05 |
| 2026 | 0.01 | 0.00 | 0.05 |
| 2027 | 0.01 | 0.00 | 0.04 |
| 2028 | 0.01 | 0.00 | 0.04 |
| 2029 | 0.01 | 0.00 | 0.04 |
Routes In Lower Great Lakes / St. Lawrence Plain
| Alder Creek | NEW-YORK | 4 | 1969 |
| Garrettsvile | OHIO | 2 | 1972 |
| Herner Crns | OHIO | 2 | 1988 |
| Grand Isle | VERMONT | 2 | 1974 |
| Duanesburg | NEW-YORK | 1 | 2009 |
| Orleans | NEW-YORK | 1 | 2010 |
| Mt Morris | NEW-YORK | 1 | 1974 |
| West Seneca | NEW-YORK | 1 | 1979 |
| Castile | NEW-YORK | 1 | 2011 |
| Byron | NEW-YORK | 1 | 1988 |
| Cicero Ctr | NEW-YORK | 1 | 1971 |
| Watertown | NEW-YORK | 1 | 2005 |
| Salem | NEW-YORK | 1 | 1977 |
| Waddington | NEW-YORK | 1 | 1998 |
| Ogdensburg | NEW-YORK | 1 | 2024 |
| Naples | NEW-YORK | 1 | 1972 |
| Philadelphia | NEW-YORK | 1 | 2008 |
| Slippery Rk | PENNSYLVANIA | 1 | 1985 |
| Ferris Crnrs | PENNSYLVANIA | 1 | 2017 |
| Teepleville | PENNSYLVANIA | 1 | 1973 |
| Hinesburg | VERMONT | 1 | 1982 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.