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

House Sparrow Population Trend in Nebraska

All statesGeneralists

House Sparrow in Nebraska has collapsed: down 83% on the route-weighted index since 1969.

-83%Since 1969TrendPercent 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 →
70Routes 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 House Sparrow Trends in NebraskaNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

long arc declinecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

House Sparrow has collapsed in Nebraska: down 83% on the route-weighted index since 1969.

House Sparrow Population Forecast in Nebraska

If the recent trend holds, House Sparrow in Nebraska is projected to fall about 100% by 2030 — from 14 in 2025 to a central estimate of 0.00 (95% range 0.00–31). A 5-year backtest shows a typical error of ±189.7%, with 100% of held-out values landing inside the 95% band.

-100%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 →
0.00Projected 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 →
0.00–3195% 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 →
±189.7%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, House Sparrow in Nebraska is projected to fall about 100% by 2030 — from 14 in 2025 to a central estimate of 0.00 (95% range 0.00–31). A 5-year backtest shows a typical error of ±189.7%, with 100% of held-out values landing inside the 95% band.19672030
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 →
20260.000.0031
20270.000.0031
20280.000.0031
20290.000.0031
20300.000.0031

House Sparrow Survey Routes in Nebraska

Routes recording House Sparrow in Nebraska.
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 →
Kimball8220251975
Liberty7620031967
Murray Lake6920251987
Kenesaw6620251967
Richland5320251968
Julian4320251969
Kearney4120251968
Irvington4020251967
Sumner3620251967
Stratton3620251975
Dalton3620251968
Lyons3220252018
Bartlett3119761967
Petersburg2720251969
Murdock2720252018
Madison2420252018
Gretna2320181967
Surprise2020251967
Arthur1920251985
Belvidere1820251967
Hampton1820252018
Sparta1620251967
Winside1620031967
Liberty 21520072004
Tilden1320252019

House Sparrow Population Trend in Other States

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

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