Species · Iowa · BBS 2025 Release · 1966–2024
Northern Mockingbird Population Trend in Iowa
Northern Mockingbird in Iowa has held roughly steady: up 3% on the route-weighted index since 1969.
+3%Since 1969
19Routes In State
55Years
Notable Northern Mockingbird Trends in Iowa
No notable trend signals for Northern Mockingbird in Iowa. See the full index history below.
Northern Mockingbird Population Forecast in Iowa
If the recent trend holds, Northern Mockingbird in Iowa is projected to rise about 62% by 2029 — from 0.14 in 2024 to a central estimate of 0.22 (95% range 0.01–0.43). A 5-year backtest shows a typical error of ±82.8%, with 80% of held-out values landing inside the 95% band.
+62%Change by 2029
0.22Projected 2029 index
0.01–0.4395% range
±82.8%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.21 | 0.01 | 0.42 |
| 2026 | 0.22 | 0.01 | 0.42 |
| 2027 | 0.22 | 0.01 | 0.42 |
| 2028 | 0.22 | 0.01 | 0.42 |
| 2029 | 0.22 | 0.01 | 0.43 |
Northern Mockingbird Survey Routes in Iowa
| Bedford | 3 | 2018 | 1971 |
| Exline | 2 | 2024 | 1974 |
| Brooklyn | 2 | 2021 | 1975 |
| Wales | 2 | 1991 | 1968 |
| Mt Hamill | 1 | 2017 | 1972 |
| Melrose | 1 | 2017 | 1977 |
| College Spgs | 1 | 2004 | 1967 |
| Bryant | 1 | 2024 | 1972 |
| West Liberty | 1 | 2018 | 1976 |
| Cedar Valley | 1 | 1983 | 1972 |
| Williamsburg | 1 | 2007 | 1967 |
| Red Rock | 1 | 2019 | 1970 |
| Washington | 1 | 2017 | 2017 |
| Neola | 1 | 1971 | 1971 |
| Maquoketa | 1 | 2013 | 1969 |
| Washta | 1 | 2012 | 2012 |
| Rock Valley | 1 | 1988 | 1988 |
| College Spgs 2 | 1 | 2019 | 2005 |
| Tipton | 1 | 2014 | 2014 |
Northern Mockingbird Population Trend in Other States
alabamaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.