Species · Vermont · BBS 2025 Release · 1966–2024
Ruffed Grouse Population Trend in Vermont
Ruffed Grouse in Vermont has edged down: down 19% on the route-weighted index since 1968.
-19%Since 1968
24Routes In State
54Years
Notable Ruffed Grouse Trends in Vermont
No notable trend signals for Ruffed Grouse in Vermont. See the full index history below.
Ruffed Grouse Population Forecast in Vermont
If the recent trend holds, Ruffed Grouse in Vermont is projected to fall about 83% by 2028 — from 0.17 in 2023 to a central estimate of 0.03 (95% range 0.00–0.34). A 5-year backtest shows a typical error of ±80.7%, with 100% of held-out values landing inside the 95% band.
-83%Change by 2028
0.03Projected 2028 index
0.00–0.3495% range
±80.7%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2024 | 0.05 | 0.00 | 0.36 |
| 2025 | 0.04 | 0.00 | 0.35 |
| 2026 | 0.04 | 0.00 | 0.35 |
| 2027 | 0.03 | 0.00 | 0.34 |
| 2028 | 0.03 | 0.00 | 0.34 |
Ruffed Grouse Survey Routes in Vermont
| W Rutland | 4 | 2018 | 1972 |
| Newbury 2 | 3 | 2023 | 2012 |
| Hardwick | 2 | 2005 | 1967 |
| Marlboro | 1 | 1989 | 1966 |
| North Pownal | 1 | 1980 | 1973 |
| Stratton | 1 | 2022 | 1968 |
| Landgrove | 1 | 1999 | 1972 |
| S Reading | 1 | 1980 | 1977 |
| Gaysville | 1 | 2018 | 1966 |
| Post Mills | 1 | 1986 | 1985 |
| Shaftsbury | 1 | 1989 | 1978 |
| S Wallingfrd | 1 | 1988 | 1969 |
| St Johnsbury | 1 | 2022 | 1972 |
| East Haven | 1 | 1985 | 1967 |
| Northfld Fls | 1 | 2017 | 1980 |
| Middlesex | 1 | 2017 | 1975 |
| East Calais | 1 | 2010 | 1966 |
| Newbury | 1 | 1993 | 1993 |
| Greensboro | 1 | 2022 | 1970 |
| Fletcher | 1 | 2015 | 1971 |
| Waterville | 1 | 1974 | 1970 |
| Hinesburg | 1 | 1974 | 1974 |
| Colchester | 1 | 1999 | 1999 |
| Stowe | 1 | 1997 | 1991 |
Ruffed Grouse Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.