BirdAnalyst
Species · BCR 28 · BBS 2025 Release · 1966–2024

Black-crowned Night Heron In Appalachian Mountains

All regionsAppalachian MountainsWetland birds

Black-crowned Night Heron in Appalachian Mountains has fallen sharply: down 72% on the route-weighted index since 1969.

-72%Since 1969
26Routes In Region
50Years

Notable Signals

No notable trend signals for Black-crowned Night Heron in Appalachian Mountains. See the full index history below.

Forecast

If the recent trend holds, Black-crowned Night Heron in Appalachian Mountains 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 ±149.4%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2029
0.01Projected 2029 index
0.00–0.1095% range
±149.4%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
20250.010.000.11
20260.010.000.10
20270.010.000.10
20280.010.000.10
20290.010.000.10

Routes In Appalachian Mountains

Routes recording Black-crowned Night Heron in Appalachian Mountains.
CoventryvileNEW-YORK41969
QuakertownPENNSYLVANIA41973
WilliamsburgPENNSYLVANIA32022
ScheafferstnPENNSYLVANIA31975
LovellTENNESSEE31985
DrummondALABAMA22007
AustinvillePENNSYLVANIA21970
Peters MtPENNSYLVANIA21993
BrunnervillePENNSYLVANIA21988
Schaefferstown 2PENNSYLVANIA22013
WallandTENNESSEE21974
Pine GroveALABAMA11999
GreensportALABAMA12005
KymulgaALABAMA12004
WilliamsportMARYLAND12015
Pocono SummitPENNSYLVANIA11968
Clear SpringPENNSYLVANIA12017
MifflintownPENNSYLVANIA12013
MiddletownPENNSYLVANIA12007
LandisburgPENNSYLVANIA11991
ElizabethvilPENNSYLVANIA12024
Jefferson CtyTENNESSEE12006
Mt OliveTENNESSEE12008
StanleyVIRGINIA12024
StollingsWEST-VIRGINIA12002

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