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

Least Tern In Central Mixed Grass Prairie

All regionsCentral Mixed Grass PrairieWetland birds

Least Tern in Central Mixed Grass Prairie has declined: down 29% on the route-weighted index since 1969.

-29%Since 1969
12Routes In Region
38Years

Notable Signals

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

Forecast

If the recent trend holds, Least Tern in Central Mixed Grass Prairie is projected to stay roughly flat through 2029, near 0.04 (95% range 0.00–0.08). A 5-year backtest shows a typical error of ±44.9%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2029
0.04Projected 2029 index
0.00–0.0895% range
±44.9%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
20250.040.000.09
20260.040.000.09
20270.040.000.09
20280.040.000.08
20290.040.000.08

Routes In Central Mixed Grass Prairie

Routes recording Least Tern in Central Mixed Grass Prairie.
DamarKANSAS32000
KearneyNEBRASKA32024
RandlettOKLAHOMA32005
DaltonKANSAS22008
AlbertKANSAS21986
Eagle CityOKLAHOMA11989
ErickOKLAHOMA12005
TegardenOKLAHOMA11971
CashionOKLAHOMA12006
JetOKLAHOMA12012
WeinertTEXAS11990
ClarendonTEXAS11969

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