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

Pyrrhuloxia In Edwards Plateau

All regionsEdwards PlateauArid-land birds

Pyrrhuloxia in Edwards Plateau has declined: down 35% on the route-weighted index since 1973.

-35%Since 1973TrendPercent 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 →
9Routes 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 →
51YearsYears 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 →

No notable trend signals for Pyrrhuloxia in Edwards Plateau. See the full index history below.

Pyrrhuloxia In Edwards Plateau Population Forecast

If the recent trend holds, Pyrrhuloxia in Edwards Plateau is projected to rise about 988% by 2029 — from 0.19 in 2024 to a central estimate of 2.0 (95% range 0.05–4.0). A 5-year backtest shows a typical error of ±1249.6%, with 0% of held-out values landing inside the 95% band.

+988%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 →
2.0Projected 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 →
0.05–4.095% 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 →
±1249.6%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, Pyrrhuloxia in Edwards Plateau is projected to rise about 988% by 2029 — from 0.19 in 2024 to a central estimate of 2.0 (95% range 0.05–4.0). A 5-year backtest shows a typical error of ±1249.6%, with 0% of held-out values landing inside the 95% band.19712029
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 →
20252.00.004.0
20262.00.004.0
20272.00.014.0
20282.00.034.0
20292.00.054.0

Routes In Edwards Plateau

Routes recording Pyrrhuloxia 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 →
MontellTEXAS132017
HarperTEXAS42023
Valley SpgsTEXAS32022
PidcokeTEXAS22002
Indian MtnTEXAS22004
RockspringTEXAS22024
UtopiaTEXAS12003
San SabaTEXAS12023
Prairie Mtn.TEXAS12024

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