BirdAnalyst
Species · BCR 23 · BBS 2025 Release · 1966–2024

Black-crowned Night Heron In Prairie Hardwood Transition

All regionsPrairie Hardwood TransitionWetland birds

Black-crowned Night Heron in Prairie Hardwood Transition has fallen sharply: down 61% on the route-weighted index since 1968.

-61%Since 1968
46Routes In Region
51Years

Notable Signals

long arc declinecomputed index

Black-crowned Night Heron has fallen sharply in Prairie Hardwood Transition: down 61% on the route-weighted index since 1968.

Forecast

If the recent trend holds, Black-crowned Night Heron in Prairie Hardwood Transition is projected to stay roughly flat through 2029, near 0.00 (95% range 0.00–0.12). A 5-year backtest shows a typical error of ±119.6%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2029
0.00Projected 2029 index
0.00–0.1295% range
±119.6%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
20250.010.000.13
20260.010.000.13
20270.010.000.13
20280.000.000.13
20290.000.000.12

Routes In Prairie Hardwood Transition

Routes recording Black-crowned Night Heron in Prairie Hardwood Transition.
Indiana DuneINDIANA52009
BrownsvilleWISCONSIN51990
BismarkOHIO41995
PrincetonWISCONSIN41993
Pt WashingtnWISCONSIN42015
Omro 2WISCONSIN42009
CoopersvilleMICHIGAN31985
GraytownOHIO31984
DresserWISCONSIN31978
ManitowocWISCONSIN32024
Rolling PrWISCONSIN32013
Columbia CtyINDIANA22023
HungerfordMICHIGAN22016
New BuffaloMICHIGAN21996
Money CreekMINNESOTA21999
OsseoMINNESOTA21991
KnappMINNESOTA21984
Le CenterMINNESOTA21999
CascoWISCONSIN21994
Fall RiverWISCONSIN21969
GuilfordILLINOIS11981
EllisINDIANA11986
Big Blue LkMICHIGAN11985
BravoMICHIGAN12015
St CharlesMICHIGAN11995

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