Species · BCR 23 · BBS 2025 Release · 1966–2024
Ruby-throated Hummingbird In Prairie Hardwood Transition
Ruby-throated Hummingbird in Prairie Hardwood Transition has surged: up 197% on the route-weighted index since 1968.
+197%Since 1968
155Routes In Region
58Years
Notable Signals
long arc increasecomputed index
Ruby-throated Hummingbird has surged in Prairie Hardwood Transition: up 197% on the route-weighted index since 1968.
Forecast
If the recent trend holds, Ruby-throated Hummingbird in Prairie Hardwood Transition is projected to rise about 88% by 2029 — from 0.38 in 2024 to a central estimate of 0.72 (95% range 0.46–0.98). A 5-year backtest shows a typical error of ±81%, with 20% of held-out values landing inside the 95% band.
+88%Change by 2029
0.72Projected 2029 index
0.46–0.9895% range
±81%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.68 | 0.42 | 0.94 |
| 2026 | 0.69 | 0.43 | 0.95 |
| 2027 | 0.70 | 0.44 | 0.96 |
| 2028 | 0.71 | 0.45 | 0.97 |
| 2029 | 0.72 | 0.46 | 0.98 |
Routes In Prairie Hardwood Transition
| Mather | WISCONSIN | 6 | 2023 |
| Caledonia 2 | MINNESOTA | 5 | 2021 |
| Almena | MICHIGAN | 4 | 2015 |
| Knox | INDIANA | 3 | 2019 |
| Howardsville | MICHIGAN | 3 | 2023 |
| Bell Oak | MICHIGAN | 3 | 2008 |
| Belding 2 | MICHIGAN | 3 | 2023 |
| Allegan Wma | MICHIGAN | 3 | 2019 |
| Holway | WISCONSIN | 3 | 1988 |
| Cadott | WISCONSIN | 3 | 2024 |
| Newburg Crns | WISCONSIN | 3 | 2018 |
| Mukwonago 2 | WISCONSIN | 3 | 2024 |
| South Bend | INDIANA | 2 | 1984 |
| Columbia Cty | INDIANA | 2 | 2022 |
| Packertown | INDIANA | 2 | 2004 |
| Scottville | MICHIGAN | 2 | 2019 |
| Bravo | MICHIGAN | 2 | 2022 |
| Monterey | MICHIGAN | 2 | 2024 |
| St Charles | MICHIGAN | 2 | 1990 |
| No Bradley | MICHIGAN | 2 | 2019 |
| Lapeer | MICHIGAN | 2 | 2024 |
| Hamburg 2 | MICHIGAN | 2 | 2023 |
| Barry S.G.A. 2 | MICHIGAN | 2 | 2019 |
| Millville | MINNESOTA | 2 | 2019 |
| N Baltimore | OHIO | 2 | 2016 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.