BirdAnalyst
Species · BCR 27 · BBS 2025 Release · 1966–2024

Black-crowned Night Heron In Southeastern Coastal Plain

All regionsSoutheastern Coastal PlainWetland birds

Black-crowned Night Heron in Southeastern Coastal Plain has collapsed: down 80% on the route-weighted index since 1968.

-80%Since 1968
68Routes In Region
54Years

Notable Signals

long arc declinecomputed index

Black-crowned Night Heron has collapsed in Southeastern Coastal Plain: down 80% on the route-weighted index since 1968.

Forecast

If the recent trend holds, Black-crowned Night Heron in Southeastern Coastal Plain is projected to stay roughly flat through 2029, near 0.01 (95% range 0.00–0.10). A 5-year backtest shows a typical error of ±65.7%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2029
0.01Projected 2029 index
0.00–0.1095% range
±65.7%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
20250.010.000.10
20260.010.000.10
20270.010.000.10
20280.010.000.10
20290.010.000.10

Routes In Southeastern Coastal Plain

Routes recording Black-crowned Night Heron in Southeastern Coastal Plain.
DeepstepGEORGIA112001
DarienGEORGIA62019
Doctor InletFLORIDA51968
Harrietts BlGEORGIA32021
PlettenbergLOUISIANA31968
MerrimonNORTH-CAROLINA32013
HallsboroNORTH-CAROLINA32015
DaleSOUTH-CAROLINA32013
SealeALABAMA22001
MiccosukeeFLORIDA21978
Alligator PtFLORIDA22024
BostonGEORGIA21983
Ware CoGEORGIA22019
LakeMISSISSIPPI22006
SupplyNORTH-CAROLINA22021
ReelsboroNORTH-CAROLINA22013
Johns IsleSOUTH-CAROLINA21979
WaverlyVIRGINIA21986
St FlorianALABAMA11967
GreensboroALABAMA12015
WallsboroALABAMA12016
Warrior StdALABAMA11985
GrangeburgALABAMA11982
MclellanALABAMA11989
Dauphin IsALABAMA11976

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