Species · Illinois · BBS 2025 Release · 1966–2024
Yellow-throated Warbler Population Trend in Illinois
Yellow-throated Warbler in Illinois has surged: up 267% on the route-weighted index since 1972.
+267%Since 1972
36Routes In State
49Years
Notable Yellow-throated Warbler Trends in Illinois
long arc increasecomputed index
Yellow-throated Warbler has surged in Illinois: up 267% on the route-weighted index since 1972.
Yellow-throated Warbler Population Forecast in Illinois
If the recent trend holds, Yellow-throated Warbler in Illinois is projected to fall about 16% by 2029 — from 0.17 in 2024 to a central estimate of 0.15 (95% range 0.04–0.25). A 5-year backtest shows a typical error of ±50.1%, with 60% of held-out values landing inside the 95% band.
-16%Change by 2029
0.15Projected 2029 index
0.04–0.2595% range
±50.1%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.14 | 0.03 | 0.24 |
| 2026 | 0.14 | 0.03 | 0.25 |
| 2027 | 0.14 | 0.04 | 0.25 |
| 2028 | 0.14 | 0.04 | 0.25 |
| 2029 | 0.15 | 0.04 | 0.25 |
Yellow-throated Warbler Survey Routes in Illinois
| Belleview | 4 | 2024 | 2016 |
| Jamestown | 3 | 1983 | 1982 |
| St Morgan | 3 | 2022 | 1991 |
| Athensville | 2 | 1992 | 1992 |
| Birds | 2 | 2024 | 1979 |
| Pulaski | 2 | 2024 | 1981 |
| Cave In Rock | 2 | 2024 | 1994 |
| Payson | 1 | 2021 | 2013 |
| Clayton | 1 | 2019 | 2016 |
| Sheffield | 1 | 1989 | 1989 |
| Newark | 1 | 2022 | 2011 |
| Stillwell | 1 | 2001 | 2001 |
| Grape Creek | 1 | 2024 | 2005 |
| Eubanks | 1 | 2015 | 2013 |
| Dailey | 1 | 1995 | 1989 |
| Martinsville | 1 | 1990 | 1990 |
| Columbia | 1 | 2022 | 2009 |
| Mascoutah Lk | 1 | 2018 | 2012 |
| Beaucoup | 1 | 2023 | 2018 |
| Brnt Prairie | 1 | 2001 | 2001 |
| Mt Vernon | 1 | 1974 | 1974 |
| Olney | 1 | 2007 | 1978 |
| Flora | 1 | 2011 | 1985 |
| Bremen | 1 | 2022 | 1994 |
| Belknap | 1 | 2024 | 1971 |
Yellow-throated Warbler Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.