Species · BCR 30 · BBS 2025 Release · 1966–2024
Blue-gray Gnatcatcher In New England / Mid-Atlantic Coast
Blue-gray Gnatcatcher in New England / Mid-Atlantic Coast has surged: up 630% on the route-weighted index since 1968.
+630%Since 1968
146Routes In Region
58Years
Notable Signals
long arc increasecomputed index
Blue-gray Gnatcatcher has surged in New England / Mid-Atlantic Coast: up 630% on the route-weighted index since 1968.
Forecast
If the recent trend holds, Blue-gray Gnatcatcher in New England / Mid-Atlantic Coast is projected to fall about 21% by 2029 — from 7.0 in 2024 to a central estimate of 5.5 (95% range 3.9–7.1). A 5-year backtest shows a typical error of ±26.1%, with 40% of held-out values landing inside the 95% band.
-21%Change by 2029
5.5Projected 2029 index
3.9–7.195% range
±26.1%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 5.1 | 3.5 | 6.7 |
| 2026 | 5.2 | 3.6 | 6.8 |
| 2027 | 5.3 | 3.7 | 6.9 |
| 2028 | 5.4 | 3.8 | 7.0 |
| 2029 | 5.5 | 3.9 | 7.1 |
Routes In New England / Mid-Atlantic Coast
| Cokesbury | MARYLAND | 44 | 2024 |
| Furnace Town | MARYLAND | 40 | 2024 |
| Pomonkey | MARYLAND | 39 | 2024 |
| Island Creek | MARYLAND | 28 | 2024 |
| Forest Grove | MARYLAND | 27 | 2023 |
| La Plata | MARYLAND | 26 | 2009 |
| Brandon | VIRGINIA | 26 | 2024 |
| Pomona | NEW-JERSEY | 25 | 2024 |
| Walkers | VIRGINIA | 25 | 2023 |
| Truhart | VIRGINIA | 25 | 2024 |
| Bennett Mill | NEW-JERSEY | 21 | 2000 |
| Winslow | NEW-JERSEY | 17 | 2024 |
| Pomfret | MARYLAND | 16 | 2024 |
| Berlin | MARYLAND | 16 | 2024 |
| Spraguetown 3 | NEW-JERSEY | 15 | 2024 |
| White Stone | VIRGINIA | 15 | 2024 |
| Nottingham | MARYLAND | 14 | 2024 |
| Newark | MARYLAND | 13 | 2024 |
| Gloucester | VIRGINIA | 13 | 2024 |
| Tall Timbers | MARYLAND | 12 | 2014 |
| Pr Frederick | MARYLAND | 12 | 2024 |
| Quinby | VIRGINIA | 12 | 2024 |
| Davidsnville | MARYLAND | 11 | 2024 |
| Estell Manor | NEW-JERSEY | 11 | 2022 |
| Millsboro | DELAWARE | 10 | 2024 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.