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

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 →
68Routes 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 →
57YearsYears 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 2029 — from 14 in 2024 to a central estimate of 0.00 (95% range 0.00–30). A 5-year backtest shows a typical error of ±184.6%, with 100% of held-out values landing inside the 95% band.

-100%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 →
0.00Projected 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 →
0.00–3095% 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 →
±184.6%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 2029 — from 14 in 2024 to a central estimate of 0.00 (95% range 0.00–30). A 5-year backtest shows a typical error of ±184.6%, with 100% of held-out values landing inside the 95% band.19672029
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 →
20250.000.0030
20260.000.0030
20270.000.0030
20280.000.0030
20290.000.0030

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 →
Dalton10820241968
Kimball8220221975
Liberty7620031967
Kearney6220241968
Murray Lake5120241987
Richland4720241968
Stratton4020241975
Murdock4020242018
Surprise3420241967
Sumner3120241967
Bartlett3119761967
Kenesaw3020241967
Julian2720241969
Arthur2720241985
Irvington2420241967
Gretna2320181967
Sparta2220211967
Belvidere2120241967
Hampton2120242018
Thurston1620241967
Winside1620031967
Liberty 21520072004
Hay Springs1420242018
Petersburg1320231969
Ponca1320242018

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 2026-05-22.