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

Rock Pigeon Population Trend in Indiana

All statesGeneralists

Rock Pigeon in Indiana has edged down: down 11% on the route-weighted index since 1968.

-11%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 →
67Routes 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 Rock Pigeon 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 Rock Pigeon in Indiana. See the full index history below.

Rock Pigeon Population Forecast in Indiana

If the recent trend holds, Rock Pigeon in Indiana is projected to rise about 19% by 2030 — from 6.4 in 2025 to a central estimate of 7.6 (95% range 0.43–15). A 5-year backtest shows a typical error of ±48.1%, with 100% of held-out values landing inside the 95% band.

+19%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 →
7.6Projected 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 →
0.43–1595% 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 →
±48.1%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, Rock Pigeon in Indiana is projected to rise about 19% by 2030 — from 6.4 in 2025 to a central estimate of 7.6 (95% range 0.43–15). A 5-year backtest shows a typical error of ±48.1%, 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 →
20267.90.8215
20277.80.7215
20287.80.6315
20297.70.5315
20307.60.4315

Rock Pigeon Survey Routes in Indiana

Routes recording Rock Pigeon 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 →
Gary16919991980
Packertown9720041967
Decatur4620251999
Portage4020042001
Lagrange3120251999
Wabash3020251981
Maplewood2620212000
Lakeville2620231993
Middlebury2320251989
Frankfort2320221999
Portage 22020252005
Pimento1720221981
New Brunswick1520252024
Laporte1520241999
Hebron1420251966
Cuba1420252017
Knox1220251981
Columbia Cty1220241981
Middletown1220251966
Brookville1220251966
Jamestown1120251986
Tipton1019921966
Indiana Dune820181993
W Lafayette720241981
Brazil720251966

Rock Pigeon Population Trend in Other States

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

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14.