Species · BCR 26 · BBS 2025 Release · 1966–2024
Purple Martin In Mississippi Alluvial Valley
Purple Martin in Mississippi Alluvial Valley has edged up: up 18% on the route-weighted index since 1968.
+18%Since 1968
70Routes In Region
58Years
Notable Signals
No notable trend signals for Purple Martin in Mississippi Alluvial Valley. See the full index history below.
Forecast
If the recent trend holds, Purple Martin in Mississippi Alluvial Valley is projected to rise about 58% by 2029 — from 12 in 2024 to a central estimate of 20 (95% range 5.7–34). A 5-year backtest shows a typical error of ±160.2%, with 20% of held-out values landing inside the 95% band.
+58%Change by 2029
20Projected 2029 index
5.7–3495% range
±160.2%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 19 | 5.4 | 33 |
| 2026 | 19 | 5.5 | 33 |
| 2027 | 20 | 5.6 | 33 |
| 2028 | 20 | 5.7 | 33 |
| 2029 | 20 | 5.7 | 34 |
Routes In Mississippi Alluvial Valley
| Carlisle | LOUISIANA | 195 | 1988 |
| Morgan City | LOUISIANA | 125 | 1986 |
| River Road | LOUISIANA | 115 | 2024 |
| Larose | LOUISIANA | 69 | 1992 |
| Keystone | LOUISIANA | 49 | 2013 |
| Pawpaw 2 | TENNESSEE | 49 | 2023 |
| Blodgett | MISSOURI | 42 | 2024 |
| Hayti | MISSOURI | 39 | 2021 |
| Gibson | LOUISIANA | 37 | 2019 |
| Saffell | ARKANSAS | 36 | 2019 |
| Brousville | LOUISIANA | 35 | 2024 |
| Berwick | LOUISIANA | 34 | 2018 |
| Cp Girardeau | MISSOURI | 32 | 2024 |
| Mayflower | LOUISIANA | 30 | 2024 |
| Floyd | LOUISIANA | 30 | 2021 |
| Kraemer | LOUISIANA | 25 | 2024 |
| Freetown | LOUISIANA | 23 | 2019 |
| Concord | LOUISIANA | 21 | 2019 |
| Tiptonville | TENNESSEE | 19 | 2023 |
| Rayville 2 | LOUISIANA | 18 | 2024 |
| Dell | ARKANSAS | 16 | 2024 |
| England | ARKANSAS | 16 | 2024 |
| Gonzales | LOUISIANA | 15 | 2019 |
| Tchula 3 | MISSISSIPPI | 15 | 2021 |
| Eudora | ARKANSAS | 14 | 2016 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.