Species · Indiana · BBS 2025 Release · 1966–2024
Summer Tanager Population Trend in Indiana
Summer Tanager in Indiana has increased: up 27% on the route-weighted index since 1968.
+27%Since 1968
35Routes In State
58Years
Notable Summer Tanager Trends in Indiana
No notable trend signals for Summer Tanager in Indiana. See the full index history below.
Summer Tanager Population Forecast in Indiana
If the recent trend holds, Summer Tanager in Indiana is projected to rise about 39% by 2029 — from 0.67 in 2024 to a central estimate of 0.94 (95% range 0.46–1.4). A 5-year backtest shows a typical error of ±21.8%, with 100% of held-out values landing inside the 95% band.
+39%Change by 2029
0.94Projected 2029 index
0.46–1.495% range
±21.8%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.93 | 0.45 | 1.4 |
| 2026 | 0.93 | 0.45 | 1.4 |
| 2027 | 0.93 | 0.46 | 1.4 |
| 2028 | 0.94 | 0.46 | 1.4 |
| 2029 | 0.94 | 0.46 | 1.4 |
Summer Tanager Survey Routes in Indiana
| Cumback | 9 | 2021 | 1966 |
| Celestine | 8 | 2024 | 1980 |
| Azalia | 5 | 2023 | 1982 |
| Clear Spring | 5 | 2024 | 1981 |
| New Phila | 4 | 2024 | 1982 |
| Pimento | 3 | 2024 | 2003 |
| Indian Spgs | 3 | 2024 | 1983 |
| Corydon | 3 | 2024 | 1966 |
| Scottsburg | 2 | 2024 | 1982 |
| New Castle | 2 | 2017 | 2016 |
| Georgia | 2 | 2024 | 1999 |
| Hebron | 1 | 2002 | 1995 |
| Hoosier | 1 | 2021 | 1990 |
| Kewanna | 1 | 2013 | 2013 |
| Indiana Dune | 1 | 2008 | 2008 |
| Kankakee Sands | 1 | 2005 | 2004 |
| Fowler | 1 | 2012 | 2012 |
| W Lafayette | 1 | 2014 | 2003 |
| Galveston | 1 | 2010 | 2010 |
| Brazil | 1 | 2021 | 1970 |
| Belmont | 1 | 2021 | 1981 |
| Spencer | 1 | 2016 | 1970 |
| Sexton | 1 | 2024 | 1981 |
| Milroy | 1 | 1992 | 1969 |
| Brookville | 1 | 2024 | 1970 |
Summer Tanager Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.