BirdAnalyst
Species · BCR 29 · BBS 2025 Release · 1966–2024

Green Heron In Piedmont

All regionsPiedmontWetland birds

Green Heron in Piedmont has declined: down 50% on the route-weighted index since 1968.

-50%Since 1968
150Routes In Region
58Years

Notable Signals

No notable trend signals for Green Heron in Piedmont. See the full index history below.

Forecast

If the recent trend holds, Green Heron in Piedmont is projected to stay roughly flat through 2029, near 0.24 (95% range 0.00–0.57). A 5-year backtest shows a typical error of ±21.4%, with 100% of held-out values landing inside the 95% band.

-2%Change by 2029
0.24Projected 2029 index
0.00–0.5795% range
±21.4%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
20250.270.000.60
20260.270.000.59
20270.260.000.59
20280.250.000.58
20290.240.000.57

Routes In Piedmont

Routes recording Green Heron in Piedmont.
YoungsvilleNORTH-CAROLINA52023
HebronGEORGIA42011
OlneyMARYLAND42024
Mount AiryNORTH-CAROLINA42022
PartlowVIRGINIA42006
LincolntonGEORGIA32015
HollonvilleGEORGIA32003
WhitesburgGEORGIA32023
EmmitsburgMARYLAND32024
WheatonMARYLAND32005
EarltonMARYLAND32019
MooresvilleNORTH-CAROLINA31996
CallNORTH-CAROLINA32016
ShrewsburyPENNSYLVANIA32012
HallVIRGINIA32014
AthensGEORGIA22024
StockbridgeGEORGIA22014
Sunny SideGEORGIA22018
Rock BranchGEORGIA22024
Pleasant ValMARYLAND22018
Croton 2NEW-JERSEY22016
MadisonNORTH-CAROLINA21985
Mooresville 2NORTH-CAROLINA22014
SheffieldNORTH-CAROLINA22013
MonticelloNORTH-CAROLINA22023

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