Species · Louisiana · BBS 2025 Release · 1966–2024
Dickcissel Population Trend in Louisiana
Dickcissel in Louisiana has collapsed: down 81% on the route-weighted index since 1969.
-81%Since 1969
59Routes In State
57Years
Notable Dickcissel Trends in Louisiana
long arc declinecomputed index
Dickcissel has collapsed in Louisiana: down 81% on the route-weighted index since 1969.
Dickcissel Population Forecast in Louisiana
If the recent trend holds, Dickcissel in Louisiana is projected to rise about 221% by 2029 — from 0.54 in 2024 to a central estimate of 1.7 (95% range 0.00–4.6). A 5-year backtest shows a typical error of ±207.2%, with 100% of held-out values landing inside the 95% band.
+221%Change by 2029
1.7Projected 2029 index
0.00–4.695% range
±207.2%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 1.9 | 0.00 | 4.8 |
| 2026 | 1.9 | 0.00 | 4.7 |
| 2027 | 1.8 | 0.00 | 4.7 |
| 2028 | 1.8 | 0.00 | 4.6 |
| 2029 | 1.7 | 0.00 | 4.6 |
Dickcissel Survey Routes in Louisiana
| Transylvania | 63 | 2022 | 1998 |
| Rayville | 45 | 2008 | 1967 |
| Ltl Chenier 2 | 32 | 2011 | 2010 |
| Mamou | 28 | 1982 | 1967 |
| Mer Rouge | 18 | 2008 | 1967 |
| Natchitoches | 17 | 1991 | 1987 |
| Fillmore | 13 | 1989 | 1968 |
| Ville Platte | 13 | 2019 | 1988 |
| Concord | 11 | 2019 | 2006 |
| Woodlawn | 7 | 2021 | 2008 |
| Derry | 6 | 1989 | 1967 |
| Mayflower | 5 | 2024 | 1967 |
| Cypress | 5 | 1987 | 1967 |
| Maurice | 5 | 2024 | 1988 |
| De Quincy | 5 | 2021 | 1999 |
| Hackberry 2 | 5 | 2021 | 2021 |
| River Road | 3 | 2024 | 1988 |
| Shaw | 3 | 2024 | 1967 |
| Clay | 3 | 2013 | 1970 |
| Longstreet | 3 | 2007 | 1967 |
| Enterprise | 3 | 2016 | 2011 |
| Kaplan | 3 | 2023 | 1998 |
| Oakdale | 3 | 1991 | 1991 |
| Rayville 2 | 3 | 2024 | 2009 |
| Plettenberg | 2 | 1988 | 1988 |
Dickcissel Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.