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

Purple Martin In Edwards Plateau

All regionsEdwards PlateauAerial insectivores

Purple Martin in Edwards Plateau has surged: up 391% on the route-weighted index since 1971.

+391%Since 1971
20Routes In Region
55Years

Notable Signals

long arc increasecomputed index

Purple Martin has surged in Edwards Plateau: up 391% on the route-weighted index since 1971.

Forecast

If the recent trend holds, Purple Martin in Edwards Plateau is projected to rise about 28% by 2029 — from 5.3 in 2024 to a central estimate of 6.7 (95% range 3.2–10). A 5-year backtest shows a typical error of ±27.6%, with 100% of held-out values landing inside the 95% band.

+28%Change by 2029
6.7Projected 2029 index
3.2–1095% range
±27.6%Backtest error
19692029
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected index95% low95% high
20256.53.010
20266.63.010
20276.63.110
20286.73.110
20296.73.210

Routes In Edwards Plateau

Routes recording Purple Martin in Edwards Plateau.
GeorgetownTEXAS191985
ManorTEXAS182024
LeanderTEXAS162006
Pidcoke 2TEXAS142024
HarperTEXAS122024
Prairie Mtn.TEXAS112024
Dripping SpgTEXAS92024
AdamsvilleTEXAS82024
RockspringTEXAS82022
UtopiaTEXAS42024
KempnerTEXAS42024
FitzhughTEXAS21983
Indian MtnTEXAS22018
LeakeyTEXAS22024
BoerneTEXAS12023
Valley SpgsTEXAS12024
San SabaTEXAS12022
PidcokeTEXAS12017
MontellTEXAS12018
Allen CreekTEXAS12024

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