BirdAnalyst
Species · Indiana · BBS 2026 Release · 1966–2025

Northern Mockingbird Population Trend in Indiana

All statesGeneralists

Northern Mockingbird in Indiana has edged down: down 18% on the route-weighted index since 1968.

-18%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 →
59YearsYears 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 fall about 22% by 2030 — from 5.0 in 2025 to a central estimate of 3.9 (95% range 1.8–6.0). A 5-year backtest shows a typical error of ±12.2%, with 100% of held-out values landing inside the 95% band.

-22%Change by 2030TrendPercent 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 2030 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 →
±12.2%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 fall about 22% by 2030 — from 5.0 in 2025 to a central estimate of 3.9 (95% range 1.8–6.0). A 5-year backtest shows a typical error of ±12.2%, with 100% of held-out values landing inside the 95% band.19662030
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 →
20264.01.96.1
20274.01.96.1
20284.01.96.0
20293.91.86.0
20303.91.86.0

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 →
New Phila3120251982
Indian Spgs1720251982
Newberry1720251999
Scottsburg1620251982
Vevay1420251966
Millersburg1320241981
Maplewood1320212000
Muncie1119971981
Brazil1120251966
Celestine1120251979
Middlebury920241990
Brookville920251966
Clear Spring920251981
Cyprss920251999
South Bend819841970
Lagrange820251999
Witts Station820252001
Georgia820251999
Knox720251984
Cumback720251966
Spencer620241967
Washington620251987
Corydon620251966
Milroy520251966
Azalia420251983

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 2026-08-14.