Species · BCR 23 · BBS 2025 Release · 1966–2024
Northern Mockingbird In Prairie Hardwood Transition
Northern Mockingbird in Prairie Hardwood Transition has surged: up 443% on the route-weighted index since 1969.
+443%Since 1969
41Routes In Region
57Years
Notable Signals
long arc increasecomputed index
Northern Mockingbird has surged in Prairie Hardwood Transition: up 443% on the route-weighted index since 1969.
Forecast
If the recent trend holds, Northern Mockingbird in Prairie Hardwood Transition is projected to fall about 40% by 2029 — from 0.23 in 2024 to a central estimate of 0.14 (95% range 0.00–0.28). A 5-year backtest shows a typical error of ±57.2%, with 100% of held-out values landing inside the 95% band.
-40%Change by 2029
0.14Projected 2029 index
0.00–0.2895% range
±57.2%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.13 | 0.00 | 0.27 |
| 2026 | 0.13 | 0.00 | 0.28 |
| 2027 | 0.14 | 0.00 | 0.28 |
| 2028 | 0.14 | 0.00 | 0.28 |
| 2029 | 0.14 | 0.00 | 0.28 |
Routes In Prairie Hardwood Transition
| N Baltimore | OHIO | 10 | 2019 |
| Middlebury | INDIANA | 9 | 2024 |
| South Bend | INDIANA | 8 | 1984 |
| Knox | INDIANA | 6 | 2024 |
| Lakeville | INDIANA | 4 | 2023 |
| Lagrange | INDIANA | 4 | 2024 |
| Bismark | OHIO | 3 | 1993 |
| Adrian | MICHIGAN | 2 | 2017 |
| Limestone | OHIO | 2 | 2023 |
| Kewanna | INDIANA | 1 | 2019 |
| Columbia Cty | INDIANA | 1 | 2022 |
| Packertown | INDIANA | 1 | 2004 |
| Ellis | INDIANA | 1 | 2009 |
| Packertown 2 | INDIANA | 1 | 2014 |
| Scottville | MICHIGAN | 1 | 1993 |
| Lawrence | MICHIGAN | 1 | 2009 |
| New Troy | MICHIGAN | 1 | 1976 |
| Belding | MICHIGAN | 1 | 1993 |
| Galesburg | MICHIGAN | 1 | 2024 |
| Howardsville | MICHIGAN | 1 | 2007 |
| Monterey | MICHIGAN | 1 | 2009 |
| Remus | MICHIGAN | 1 | 2002 |
| Mottville | MICHIGAN | 1 | 2008 |
| Prattville | MICHIGAN | 1 | 1987 |
| Pettysville | MICHIGAN | 1 | 1979 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.