BirdAnalyst
Species · BCR 19 · BBS 2025 Release · 1966–2024

Purple Martin In Central Mixed Grass Prairie

All regionsCentral Mixed Grass PrairieAerial insectivores

Purple Martin in Central Mixed Grass Prairie has edged down: down 11% on the route-weighted index since 1969.

-11%Since 1969
77Routes In Region
57Years

Notable Signals

No notable trend signals for Purple Martin in Central Mixed Grass Prairie. See the full index history below.

Forecast

If the recent trend holds, Purple Martin in Central Mixed Grass Prairie is projected to rise about 121% by 2029 — from 0.37 in 2024 to a central estimate of 0.82 (95% range 0.28–1.4). A 5-year backtest shows a typical error of ±50.6%, with 100% of held-out values landing inside the 95% band.

+121%Change by 2029
0.82Projected 2029 index
0.28–1.495% range
±50.6%Backtest error
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 index95% low95% high
20250.790.241.3
20260.800.251.3
20270.810.261.4
20280.810.271.4
20290.820.281.4

Routes In Central Mixed Grass Prairie

Routes recording Purple Martin in Central Mixed Grass Prairie.
VerdenOKLAHOMA402015
LeovilleKANSAS111970
JohnstownNEBRASKA112019
HaysKANSAS82008
SolomonKANSAS82019
JamestownKANSAS82018
CashionOKLAHOMA82023
WallTEXAS82022
RosstonOKLAHOMA61976
ArapahoOKLAHOMA62007
ColonyOKLAHOMA61995
GrayKANSAS52018
Pear ValleyTEXAS52024
WeinertTEXAS51980
HaskellTEXAS52021
HollenbergKANSAS42021
KearneyNEBRASKA42024
AlmeriaNEBRASKA41980
HanoverKANSAS32023
MisslerKANSAS31998
BerwetKANSAS32024
HodgesKANSAS32014
Eagle CityOKLAHOMA32004
WakitaOKLAHOMA31982
TegardenOKLAHOMA31976

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