Species · Connecticut · BBS 2025 Release · 1966–2024
Prairie Warbler Population Trend in Connecticut
Prairie Warbler in Connecticut has fallen sharply: down 73% on the route-weighted index since 1968.
-73%Since 1968
19Routes In State
56Years
Notable Prairie Warbler Trends in Connecticut
long arc declinecomputed index
Prairie Warbler has fallen sharply in Connecticut: down 73% on the route-weighted index since 1968.
Prairie Warbler Population Forecast in Connecticut
If the recent trend holds, Prairie Warbler in Connecticut is projected to fall about 100% by 2029 — from 0.11 in 2024 to a central estimate of 0.00 (95% range 0.00–1.3). A 5-year backtest shows a typical error of ±126.5%, with 100% of held-out values landing inside the 95% band.
-100%Change by 2029
0.00Projected 2029 index
0.00–1.395% range
±126.5%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.00 | 0.00 | 1.3 |
| 2026 | 0.00 | 0.00 | 1.3 |
| 2027 | 0.00 | 0.00 | 1.3 |
| 2028 | 0.00 | 0.00 | 1.3 |
| 2029 | 0.00 | 0.00 | 1.3 |
Prairie Warbler Survey Routes in Connecticut
| Woodstock | 2 | 1996 | 1969 |
| No Woodbury | 2 | 1982 | 1967 |
| Mystic | 1 | 2014 | 1973 |
| E Hartland | 1 | 1990 | 1967 |
| Buckingham | 1 | 2015 | 1966 |
| Uncasville | 1 | 2023 | 1973 |
| Westbrook | 1 | 1994 | 1977 |
| Willimantic | 1 | 2018 | 1968 |
| Sherman | 1 | 2018 | 1977 |
| Greenwich | 1 | 1992 | 1977 |
| Danbury | 1 | 1989 | 1988 |
| Warren | 1 | 1983 | 1973 |
| Long Hill | 1 | 2019 | 1972 |
| Mid Haddam | 1 | 2023 | 1973 |
| Southington | 1 | 1994 | 1973 |
| New Hartford | 1 | 1987 | 1972 |
| New Hartford | 1 | 2016 | 1997 |
| Woodstock 2 | 1 | 2022 | 2022 |
| Granby | 1 | 2024 | 1989 |
Prairie Warbler Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.