Species · BCR 30 · BBS 2025 Release · 1966–2024
Vesper Sparrow In New England / Mid-Atlantic Coast
Vesper Sparrow in New England / Mid-Atlantic Coast has collapsed: down 97% on the route-weighted index since 1968.
-97%Since 1968
61Routes In Region
57Years
Notable Signals
long arc declinecomputed index
Vesper Sparrow has collapsed in New England / Mid-Atlantic Coast: down 97% on the route-weighted index since 1968.
Forecast
If the recent trend holds, Vesper Sparrow in New England / Mid-Atlantic Coast is projected to stay roughly flat through 2029, near 0.00 (95% range 0.00–0.20). A 5-year backtest shows a typical error of ±255.2%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2029
0.00Projected 2029 index
0.00–0.2095% range
±255.2%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.00 | 0.00 | 0.20 |
| 2026 | 0.00 | 0.00 | 0.20 |
| 2027 | 0.00 | 0.00 | 0.20 |
| 2028 | 0.00 | 0.00 | 0.20 |
| 2029 | 0.00 | 0.00 | 0.20 |
Routes In New England / Mid-Atlantic Coast
| Fruitland | MARYLAND | 8 | 1997 |
| Holleyville | DELAWARE | 5 | 2004 |
| Snow Hill | MARYLAND | 4 | 1971 |
| Milton | DELAWARE | 3 | 2012 |
| Holleyville 2 | DELAWARE | 3 | 2009 |
| Harmony | MARYLAND | 3 | 2017 |
| Beltsville | MARYLAND | 2 | 1970 |
| La Plata | MARYLAND | 2 | 1996 |
| Littleton | MASSACHUSETTS | 2 | 1993 |
| S Barre | MASSACHUSETTS | 2 | 1980 |
| Quinby | VIRGINIA | 2 | 1979 |
| No Woodbury | CONNECTICUT | 1 | 1979 |
| Mt Pleasant | DELAWARE | 1 | 1999 |
| Wilmington | DELAWARE | 1 | 1966 |
| Harrington | DELAWARE | 1 | 1980 |
| Frederica | DELAWARE | 1 | 1977 |
| Dover | DELAWARE | 1 | 1978 |
| Frankford | DELAWARE | 1 | 1976 |
| Lowes Xrds | DELAWARE | 1 | 1970 |
| Bethany Bch | DELAWARE | 1 | 1970 |
| Blackbird | DELAWARE | 1 | 2019 |
| Georgetown | DELAWARE | 1 | 2008 |
| Pepperbox 2 | DELAWARE | 1 | 2024 |
| Cape Neddick | MAINE | 1 | 1978 |
| Largo | MARYLAND | 1 | 1979 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.