Species · Connecticut · BBS 2025 Release · 1966–2024
Winter Wren Population Trend in Connecticut
Winter Wren in Connecticut has increased: up 32% on the route-weighted index since 1973.
+32%Since 1973
15Routes In State
37Years
Notable Winter Wren Trends in Connecticut
No notable trend signals for Winter Wren in Connecticut. See the full index history below.
Winter Wren Population Forecast in Connecticut
If the recent trend holds, Winter Wren in Connecticut is projected to rise about 52% by 2029 — from 0.11 in 2024 to a central estimate of 0.17 (95% range 0.00–0.45). A 5-year backtest shows a typical error of ±70.8%, with 100% of held-out values landing inside the 95% band.
+52%Change by 2029
0.17Projected 2029 index
0.00–0.4595% range
±70.8%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.17 | 0.00 | 0.45 |
| 2026 | 0.17 | 0.00 | 0.45 |
| 2027 | 0.17 | 0.00 | 0.45 |
| 2028 | 0.17 | 0.00 | 0.45 |
| 2029 | 0.17 | 0.00 | 0.45 |
Winter Wren Survey Routes in Connecticut
| New Hartford | 3 | 2022 | 1997 |
| Sherman | 2 | 2013 | 1972 |
| Buckingham | 1 | 1974 | 1974 |
| Uncasville | 1 | 1991 | 1991 |
| Woodstock | 1 | 1996 | 1968 |
| Westbrook | 1 | 1992 | 1992 |
| Greenwich | 1 | 1975 | 1974 |
| Danbury | 1 | 1976 | 1976 |
| Warren | 1 | 2010 | 1972 |
| Long Hill | 1 | 1974 | 1973 |
| Mid Haddam | 1 | 2024 | 2018 |
| Southington | 1 | 1999 | 1999 |
| New Hartford | 1 | 1980 | 1980 |
| Woodstock 2 | 1 | 2021 | 2019 |
| Granby | 1 | 2023 | 1989 |
Winter Wren Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.