Species · BCR 30 · BBS 2025 Release · 1966–2024
Hooded Merganser In New England / Mid-Atlantic Coast
Hooded Merganser in New England / Mid-Atlantic Coast has fallen sharply: down 56% on the route-weighted index since 1983.
-56%Since 1983
18Routes In Region
28Years
Notable Signals
No notable trend signals for Hooded Merganser in New England / Mid-Atlantic Coast. See the full index history below.
Forecast
If the recent trend holds, Hooded Merganser in New England / Mid-Atlantic Coast is projected to stay roughly flat through 2029, near 0.01 (95% range 0.00–0.05). A 5-year backtest shows a typical error of ±26.6%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2029
0.01Projected 2029 index
0.00–0.0595% range
±26.6%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 | 0.05 |
| 2028 | 0.01 | 0.00 | 0.05 |
| 2029 | 0.01 | 0.00 | 0.05 |
Routes In New England / Mid-Atlantic Coast
| Wallum Lake | RHODE-ISLAND | 4 | 2012 |
| Epsom | NEW-HAMPSHIRE | 2 | 1993 |
| Buckingham | CONNECTICUT | 1 | 2011 |
| No Woodbury | CONNECTICUT | 1 | 2003 |
| Danbury | CONNECTICUT | 1 | 1969 |
| Warren | CONNECTICUT | 1 | 2006 |
| Mid Haddam | CONNECTICUT | 1 | 2022 |
| Cheltenham | MARYLAND | 1 | 1999 |
| Piney Neck | MARYLAND | 1 | 2006 |
| Forest Grove | MARYLAND | 1 | 2013 |
| Littleton | MASSACHUSETTS | 1 | 2013 |
| Belchertown | MASSACHUSETTS | 1 | 2015 |
| Holden | MASSACHUSETTS | 1 | 2007 |
| Warren 2 | MASSACHUSETTS | 1 | 2024 |
| Ware River | MASSACHUSETTS | 1 | 2017 |
| Dover | NEW-HAMPSHIRE | 1 | 1992 |
| Strafford | NEW-HAMPSHIRE | 1 | 2002 |
| East Kingston | NEW-HAMPSHIRE | 1 | 2017 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.