Species · North Dakota · BBS 2025 Release · 1966–2024
Sedge Wren Population Trend in North Dakota
Sedge Wren in North Dakota has surged: up 568% on the route-weighted index since 1970.
+568%Since 1970
45Routes In State
56Years
Notable Sedge Wren Trends in North Dakota
long arc increasecomputed index
Sedge Wren has surged in North Dakota: up 568% on the route-weighted index since 1970.
Sedge Wren Population Forecast in North Dakota
If the recent trend holds, Sedge Wren in North Dakota is projected to rise about 57% by 2029 — from 3.4 in 2024 to a central estimate of 5.3 (95% range 2.9–7.8). A 5-year backtest shows a typical error of ±55%, with 60% of held-out values landing inside the 95% band.
+57%Change by 2029
5.3Projected 2029 index
2.9–7.895% range
±55%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 5.0 | 2.6 | 7.4 |
| 2026 | 5.1 | 2.7 | 7.5 |
| 2027 | 5.2 | 2.8 | 7.6 |
| 2028 | 5.3 | 2.8 | 7.7 |
| 2029 | 5.3 | 2.9 | 7.8 |
Sedge Wren Survey Routes in North Dakota
| Sheyenne Lk | 31 | 2024 | 1986 |
| Regan | 17 | 2022 | 1971 |
| Horsehead Lk | 15 | 2024 | 1981 |
| Kempton | 8 | 2017 | 1969 |
| Niles | 8 | 2024 | 1992 |
| Montpelier | 8 | 2024 | 1995 |
| Rolla | 7 | 2022 | 1969 |
| Bowesmont 2 | 7 | 2016 | 2016 |
| Danzig | 6 | 2014 | 1982 |
| Wimbledon | 6 | 2024 | 1994 |
| Bowman | 6 | 2019 | 2014 |
| Emerado | 5 | 2024 | 1973 |
| Nash | 5 | 2017 | 1981 |
| Lakota | 5 | 2009 | 1968 |
| Douglas Crk | 5 | 2023 | 1984 |
| Bowesmont | 4 | 2014 | 1968 |
| Loraine | 4 | 2019 | 1986 |
| Forman | 3 | 2023 | 1968 |
| Edgeley | 3 | 2024 | 1984 |
| Cooperstown | 3 | 2024 | 1971 |
| Buchanan | 3 | 2024 | 1969 |
| Abercrombie | 3 | 2010 | 2004 |
| Danzig 2 | 3 | 2024 | 2019 |
| Lakota 2 | 3 | 2024 | 2010 |
| Sydney | 2 | 1980 | 1978 |
Sedge Wren Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.