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

Prothonotary Warbler In Piedmont

All regionsPiedmontForest birds

Prothonotary Warbler in Piedmont has risen sharply: up 53% on the route-weighted index since 1968.

+53%Since 1968
65Routes In Region
58Years

Notable Signals

long arc increasecomputed index

Prothonotary Warbler has risen sharply in Piedmont: up 53% on the route-weighted index since 1968.

Forecast

If the recent trend holds, Prothonotary Warbler in Piedmont is projected to stay roughly flat through 2029, near 0.12 (95% range 0.02–0.21). A 5-year backtest shows a typical error of ±17.3%, with 100% of held-out values landing inside the 95% band.

+6%Change by 2029
0.12Projected 2029 index
0.02–0.2195% range
±17.3%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
20250.120.020.21
20260.120.020.21
20270.120.020.21
20280.120.020.21
20290.120.020.21

Routes In Piedmont

Routes recording Prothonotary Warbler in Piedmont.
LanettALABAMA41978
BaldwinGEORGIA21970
BowdonGEORGIA22015
WashingtonGEORGIA22024
Sunny SideGEORGIA22015
EarltonMARYLAND22019
OakboroNORTH-CAROLINA22024
TrymeVIRGINIA22006
BrodnaxVIRGINIA22024
FinchleyVIRGINIA22017
MillervilleALABAMA11986
Liberty CityALABAMA11985
Nixburg 2ALABAMA12013
ForsythGEORGIA12006
CrestGEORGIA11976
LincolntonGEORGIA12003
MaxeysGEORGIA12017
HollonvilleGEORGIA11978
SiloamGEORGIA12009
GrovetownGEORGIA12002
HiramGEORGIA11984
StockbridgeGEORGIA11985
RutledgeGEORGIA11982
JulietteGEORGIA11976
MetasvilleGEORGIA11998

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