BirdAnalyst
Species · BCR 22 · BBS 2025 Release · 1966–2024

American Bittern In Eastern Tallgrass Prairie

All regionsEastern Tallgrass PrairieWetland birds

American Bittern in Eastern Tallgrass Prairie has declined: down 28% on the route-weighted index since 1972.

-28%Since 1972
27Routes In Region
30Years

Notable Signals

No notable trend signals for American Bittern in Eastern Tallgrass Prairie. See the full index history below.

Forecast

If the recent trend holds, American Bittern in Eastern Tallgrass Prairie is projected to stay roughly flat through 2029, near 0.01 (95% range 0.00–0.02). A 5-year backtest shows a typical error of ±32.4%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2029
0.01Projected 2029 index
0.00–0.0295% range
±32.4%Backtest error
19702029
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
20250.010.000.02
20260.010.000.02
20270.010.000.02
20280.010.000.02
20290.010.000.02

Routes In Eastern Tallgrass Prairie

Routes recording American Bittern in Eastern Tallgrass Prairie.
Trading PostKANSAS32012
BartonvilleILLINOIS22019
JamestownILLINOIS21979
Lake SummersetILLINOIS22012
OhioMISSOURI22004
HuntsvilleMISSOURI21984
GeneseoILLINOIS11975
New LenoxILLINOIS11976
ChandlervillILLINOIS11978
Terre HauteILLINOIS12001
ClarksdaleILLINOIS11971
DudleyvilleILLINOIS12005
HebronINDIANA11976
WabashINDIANA11987
Portage 2INDIANA12017
Kankakee SandsINDIANA12024
DinsdaleIOWA11985
BarclayKANSAS12008
OlsburgKANSAS12016
Ash CreekMINNESOTA11991
LakevilleMINNESOTA11974
RockinghamMISSOURI11974
StetMISSOURI11992
GretnaNEBRASKA11972
IrvingtonNEBRASKA11970

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