Species · Illinois · BBS 2025 Release · 1966–2024
Tufted Titmouse Population Trend in Illinois
Tufted Titmouse in Illinois has surged: up 154% on the route-weighted index since 1968.
+154%Since 1968
100Routes In State
58Years
Notable Tufted Titmouse Trends in Illinois
long arc increasecomputed index
Tufted Titmouse has surged in Illinois: up 154% on the route-weighted index since 1968.
Tufted Titmouse Population Forecast in Illinois
If the recent trend holds, Tufted Titmouse in Illinois is projected to fall about 13% by 2029 — from 8.2 in 2024 to a central estimate of 7.1 (95% range 4.9–9.3). A 5-year backtest shows a typical error of ±26.7%, with 60% of held-out values landing inside the 95% band.
-13%Change by 2029
7.1Projected 2029 index
4.9–9.395% range
±26.7%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 6.9 | 4.7 | 9.1 |
| 2026 | 6.9 | 4.7 | 9.2 |
| 2027 | 7.0 | 4.8 | 9.2 |
| 2028 | 7.1 | 4.9 | 9.3 |
| 2029 | 7.1 | 4.9 | 9.3 |
Tufted Titmouse Survey Routes in Illinois
| Mt Vernon | 49 | 2024 | 1971 |
| Bremen | 43 | 2024 | 1969 |
| Beaverdam Lk | 33 | 2023 | 1970 |
| Pulaski | 31 | 2024 | 1970 |
| Belknap | 31 | 2024 | 1970 |
| York | 29 | 2024 | 1993 |
| Mascoutah Lk | 28 | 2024 | 1967 |
| Belleview | 26 | 2024 | 1966 |
| Kell | 25 | 2024 | 2001 |
| Cave In Rock | 24 | 2024 | 1993 |
| Bradbury | 23 | 2024 | 1971 |
| Eubanks | 23 | 2024 | 2001 |
| Royalton | 23 | 2024 | 2001 |
| Sandusky | 21 | 2023 | 1993 |
| Marshall | 21 | 2024 | 2003 |
| Pawnee | 19 | 2024 | 1967 |
| Athens | 19 | 2024 | 1995 |
| Delwood | 17 | 2024 | 1970 |
| Dudleyville | 16 | 2024 | 2001 |
| Birds | 15 | 2024 | 1976 |
| St Morgan | 12 | 2022 | 1967 |
| Brownville | 12 | 2024 | 1993 |
| Payson | 12 | 2024 | 2000 |
| Robinson | 11 | 2023 | 1970 |
| Bartonville | 10 | 2024 | 1973 |
Tufted Titmouse Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.