Species · Louisiana · BBS 2025 Release · 1966–2024
Summer Tanager Population Trend in Louisiana
Summer Tanager in Louisiana has increased: up 33% on the route-weighted index since 1969.
+33%Since 1969
84Routes In State
57Years
Notable Summer Tanager Trends in Louisiana
No notable trend signals for Summer Tanager in Louisiana. See the full index history below.
Summer Tanager Population Forecast in Louisiana
If the recent trend holds, Summer Tanager in Louisiana is projected to fall about 23% by 2029 — from 6.6 in 2024 to a central estimate of 5.0 (95% range 3.0–7.1). A 5-year backtest shows a typical error of ±20.3%, with 100% of held-out values landing inside the 95% band.
-23%Change by 2029
5.0Projected 2029 index
3.0–7.195% range
±20.3%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 5.0 | 3.0 | 7.1 |
| 2026 | 5.0 | 3.0 | 7.1 |
| 2027 | 5.0 | 3.0 | 7.1 |
| 2028 | 5.0 | 3.0 | 7.1 |
| 2029 | 5.0 | 3.0 | 7.1 |
Summer Tanager Survey Routes in Louisiana
| Longstreet | 23 | 2024 | 1967 |
| Goodwill | 20 | 2024 | 2004 |
| Natchez | 19 | 2024 | 1992 |
| Mount Union | 17 | 2024 | 1998 |
| Derry | 15 | 1989 | 1967 |
| Womack | 15 | 2024 | 1999 |
| Tensas Nwr | 15 | 2024 | 1987 |
| Easton | 14 | 1990 | 1967 |
| Clay | 13 | 2024 | 1968 |
| Norwood | 13 | 2024 | 2004 |
| Frogmore | 12 | 2024 | 1998 |
| Ivan | 12 | 2013 | 1998 |
| Atchafalaya | 12 | 2024 | 1989 |
| Marion | 11 | 1996 | 1988 |
| Ivan 2 | 11 | 2016 | 2014 |
| Evelyn | 11 | 2024 | 2004 |
| Fillmore | 10 | 1989 | 1968 |
| Many | 10 | 1992 | 1989 |
| Linville | 10 | 2024 | 1998 |
| Enterprise | 10 | 2024 | 2006 |
| Plettenberg | 9 | 2022 | 1968 |
| Oakdale | 9 | 1994 | 1991 |
| Derry 2 | 9 | 2024 | 1990 |
| Hargis 2 | 9 | 2014 | 2013 |
| Shaw | 8 | 2024 | 1967 |
Summer Tanager Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.