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

Green Heron In Eastern Tallgrass Prairie

All regionsEastern Tallgrass PrairieWetland birds

Green Heron in Eastern Tallgrass Prairie has fallen sharply: down 55% on the route-weighted index since 1968.

-55%Since 1968
242Routes In Region
58Years

Notable Signals

long arc declinecomputed index

Green Heron has fallen sharply in Eastern Tallgrass Prairie: down 55% on the route-weighted index since 1968.

Forecast

If the recent trend holds, Green Heron in Eastern Tallgrass Prairie is projected to fall about 23% by 2029 — from 0.22 in 2024 to a central estimate of 0.17 (95% range 0.00–0.34). A 5-year backtest shows a typical error of ±18.5%, with 100% of held-out values landing inside the 95% band.

-23%Change by 2029
0.17Projected 2029 index
0.00–0.3495% range
±18.5%Backtest error
19662029
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
20250.190.030.36
20260.190.020.35
20270.180.010.35
20280.170.010.34
20290.170.000.34

Routes In Eastern Tallgrass Prairie

Routes recording Green Heron in Eastern Tallgrass Prairie.
DaileyILLINOIS52005
GaryINDIANA51995
BelleviewILLINOIS42023
RockinghamMISSOURI41999
StetMISSOURI41990
MilfordMISSOURI42024
KentonOHIO42013
Mill CreekILLINOIS32012
MackinawILLINOIS32021
Mascoutah LkILLINOIS32018
ThorntownINDIANA32022
PortageINDIANA32004
Davis CornerIOWA32005
MoreheadKANSAS32012
Sni MillsMISSOURI31990
SticklervillMISSOURI32012
TrentonMISSOURI32001
KearneyMISSOURI32024
GildehouseMISSOURI31989
AuburnMISSOURI32024
PutnamILLINOIS21996
WayneILLINOIS22023
NewarkILLINOIS22016
Terre HauteILLINOIS22024
WilliamsfldILLINOIS22018

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