BirdAnalyst
Species · BCR 20 · BBS 2025 Release · 1966–2024

Greater Roadrunner In Edwards Plateau

All regionsEdwards PlateauArid-land birds

Greater Roadrunner in Edwards Plateau has fallen sharply: down 51% on the route-weighted index since 1969.

-51%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 →
19Routes 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 →
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 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 →

Greater Roadrunner has fallen sharply in Edwards Plateau: down 51% on the route-weighted index since 1969.

Forecast

If the recent trend holds, Greater Roadrunner in Edwards Plateau is projected to rise about 31% by 2029 — from 0.81 in 2024 to a central estimate of 1.1 (95% range 0.00–2.2). A 5-year backtest shows a typical error of ±84.4%, with 100% of held-out values landing inside the 95% band.

+31%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 →
1.1Projected 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 →
0.00–2.295% 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 →
±84.4%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, Greater Roadrunner in Edwards Plateau is projected to rise about 31% by 2029 — from 0.81 in 2024 to a central estimate of 1.1 (95% range 0.00–2.2). A 5-year backtest shows a typical error of ±84.4%, 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 →
20251.10.002.2
20261.10.002.2
20271.10.002.2
20281.10.002.2
20291.10.002.2

Routes In Edwards Plateau

Routes recording Greater Roadrunner 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 →
Indian MtnTEXAS22024
LeakeyTEXAS22024
Prairie Mtn.TEXAS22024
Allen CreekTEXAS22024
BoerneTEXAS12010
UtopiaTEXAS12023
GeorgetownTEXAS11975
FitzhughTEXAS11982
Valley SpgsTEXAS12024
HarperTEXAS12024
San SabaTEXAS12024
PidcokeTEXAS12017
KempnerTEXAS12023
AdamsvilleTEXAS12023
Dripping SpgTEXAS12017
Pidcoke 2TEXAS12023
LeanderTEXAS12006
MontellTEXAS12024
RockspringTEXAS12024

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.