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

American Bittern In Central Mixed Grass Prairie

All regionsCentral Mixed Grass PrairieWetland birds

American Bittern in Central Mixed Grass Prairie has surged: up 545% on the route-weighted index since 1972.

+545%Since 1972
17Routes In Region
51Years

Notable Signals

long arc increasecomputed index

American Bittern has surged in Central Mixed Grass Prairie: up 545% on the route-weighted index since 1972.

Forecast

If the recent trend holds, American Bittern in Central Mixed Grass Prairie is projected to fall about 19% by 2029 — from 0.27 in 2024 to a central estimate of 0.22 (95% range 0.01–0.42). A 5-year backtest shows a typical error of ±48.3%, with 100% of held-out values landing inside the 95% band.

-19%Change by 2029
0.22Projected 2029 index
0.01–0.4295% range
±48.3%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
20250.210.000.41
20260.210.010.41
20270.210.010.42
20280.210.010.42
20290.220.010.42

Routes In Central Mixed Grass Prairie

Routes recording American Bittern in Central Mixed Grass Prairie.
Wheeler CoNEBRASKA82024
BassettNEBRASKA62024
AlbertKANSAS42019
DouglasOKLAHOMA41987
GrayKANSAS31994
KennedyNEBRASKA32024
Crescent LkNEBRASKA32016
Swan LakeNEBRASKA22022
CoatsKANSAS11979
BuckeyeKANSAS11974
KearneyNEBRASKA11974
SurpriseNEBRASKA11972
Piester LakeNEBRASKA12023
BrownleeNEBRASKA12024
MullenNEBRASKA12017
NenzelNEBRASKA12022
JetOKLAHOMA12016

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