Species · North Carolina · BBS 2025 Release · 1966–2024
Worm-eating Warbler Population Trend in North Carolina
Worm-eating Warbler in North Carolina has surged: up 129% on the route-weighted index since 1971.
+129%Since 1971
59Routes In State
55Years
Notable Worm-eating Warbler Trends in North Carolina
long arc increasecomputed index
Worm-eating Warbler has surged in North Carolina: up 129% on the route-weighted index since 1971.
Worm-eating Warbler Population Forecast in North Carolina
If the recent trend holds, Worm-eating Warbler in North Carolina is projected to rise about 89% by 2029 — from 0.51 in 2024 to a central estimate of 0.97 (95% range 0.21–1.7). A 5-year backtest shows a typical error of ±108.3%, with 100% of held-out values landing inside the 95% band.
+89%Change by 2029
0.97Projected 2029 index
0.21–1.795% range
±108.3%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.95 | 0.19 | 1.7 |
| 2026 | 0.95 | 0.19 | 1.7 |
| 2027 | 0.96 | 0.20 | 1.7 |
| 2028 | 0.97 | 0.21 | 1.7 |
| 2029 | 0.97 | 0.21 | 1.7 |
Worm-eating Warbler Survey Routes in North Carolina
| Fontana | 13 | 2024 | 1968 |
| Mashoes | 8 | 1982 | 1971 |
| Table Rock | 6 | 2022 | 1994 |
| Waterville | 5 | 2024 | 1994 |
| Merrimon | 4 | 2019 | 1975 |
| Andrews | 4 | 1998 | 1994 |
| Brevard | 3 | 2022 | 1968 |
| Cullowhee | 3 | 2023 | 1974 |
| Newport | 3 | 2022 | 1995 |
| Highlands | 3 | 2024 | 1994 |
| Oteen | 3 | 2024 | 1976 |
| Kinston | 2 | 2008 | 1997 |
| California | 2 | 2013 | 1972 |
| Kyle | 2 | 2021 | 1994 |
| French Broad River | 2 | 2023 | 2009 |
| Todd | 2 | 2010 | 2003 |
| Milltail Cr | 2 | 2024 | 1992 |
| Spring Hope | 2 | 2024 | 2002 |
| Eden | 2 | 2018 | 2018 |
| Shallotte | 1 | 1989 | 1989 |
| Myrtle Grove | 1 | 2005 | 1995 |
| Hallsboro | 1 | 2016 | 2011 |
| Sheep Ridge | 1 | 2016 | 1994 |
| Arapahoe | 1 | 1994 | 1994 |
| Beargrass | 1 | 1981 | 1981 |
Worm-eating Warbler Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.