BirdAnalyst
Species · Indiana · BBS 2025 Release · 1966–2024

Northern Mockingbird Population Trend in Indiana

All statesGeneralists

Northern Mockingbird in Indiana has declined: down 29% on the route-weighted index since 1968.

-29%Since 1968TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
62Routes In StateSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
58YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Northern Mockingbird Trends in IndianaNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

No notable trend signals for Northern Mockingbird in Indiana. See the full index history below.

Northern Mockingbird Population Forecast in Indiana

If the recent trend holds, Northern Mockingbird in Indiana is projected to stay roughly flat through 2029, near 3.9 (95% range 1.8–6.0). A 5-year backtest shows a typical error of ±9.5%, with 100% of held-out values landing inside the 95% band.

-9%Change by 2029TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
3.9Projected 2029 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
1.8–6.095% range95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
±9.5%Backtest errorBacktest errorTypical error when we hold out the most recent years, forecast them, and compare to what actually happened. Lower means a more trustworthy projection.Full methodology →
If the recent trend holds, Northern Mockingbird in Indiana is projected to stay roughly flat through 2029, near 3.9 (95% range 1.8–6.0). A 5-year backtest shows a typical error of ±9.5%, with 100% of held-out values landing inside the 95% band.19662029
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →95% low95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →95% high95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
20253.91.86.0
20263.91.86.0
20273.91.86.0
20283.91.86.0
20293.91.86.0

Northern Mockingbird Survey Routes in Indiana

Routes recording Northern Mockingbird in Indiana.
Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology →
Scottsburg2120241982
Washington1820241987
Cumback1420211966
Millersburg1320241981
Indian Spgs1320241982
New Phila1320241982
Vevay1320241966
Maplewood1320212000
Cyprss1220241999
Muncie1119971981
Brookville1120241966
Celestine1020241979
Middlebury920241990
Brazil920241966
South Bend819841970
Corydon820241966
Berne720241966
Knox620241984
Spencer620241967
Clear Spring620241981
Newberry620241999
Pimento520241981
Azalia520241983
Georgia520241999
Jamestown420241987

Northern Mockingbird Population Trend in Other States

alabamaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.