BirdAnalyst
Species · BCR 20 · BBS 2026 Release · 1966–2025

House Sparrow In Edwards Plateau

All regionsEdwards PlateauGeneralists

House Sparrow in Edwards Plateau has collapsed: down 76% on the route-weighted index since 1969.

-76%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 →
21Routes In RegionSurvey 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 SignalsNotable 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 Edwards Plateau: down 76% on the route-weighted index since 1969.

House Sparrow In Edwards Plateau Population Forecast

If the recent trend holds, House Sparrow in Edwards Plateau is projected to fall about 100% by 2030 — from 7.4 in 2025 to a central estimate of 0.00 (95% range 0.00–9.5). A 5-year backtest shows a typical error of ±107.9%, 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 →
0.00–9.595% 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 →
±107.9%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 Edwards Plateau is projected to fall about 100% by 2030 — from 7.4 in 2025 to a central estimate of 0.00 (95% range 0.00–9.5). A 5-year backtest shows a typical error of ±107.9%, 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 →
20260.180.009.7
20270.000.009.5
20280.000.009.5
20290.000.009.5
20300.000.009.5

Routes In Edwards Plateau

Routes recording House Sparrow in Edwards Plateau.
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 →
Manor 2TEXAS562025
FitzhughTEXAS401983
ManorTEXAS242024
LeanderTEXAS192006
UtopiaTEXAS152025
GeorgetownTEXAS151985
AdamsvilleTEXAS152025
Prairie Mtn.TEXAS102025
Dripping SpgTEXAS62025
Valley SpgsTEXAS52025
HarperTEXAS52025
MontellTEXAS52023
BoerneTEXAS42025
Indian MtnTEXAS41991
San SabaTEXAS32025
LeakeyTEXAS22023
PidcokeTEXAS12016
KempnerTEXAS12024
Pidcoke 2TEXAS12024
Allen CreekTEXAS12024
RockspringTEXAS12024

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