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

Northern Rough-winged Swallow In Piedmont

All regionsPiedmontAerial insectivores

Northern Rough-winged Swallow in Piedmont has surged: up 198% on the route-weighted index since 1968.

+198%Since 1968
154Routes In Region
58Years

Notable Signals

long arc increasecomputed index

Northern Rough-winged Swallow has surged in Piedmont: up 198% on the route-weighted index since 1968.

Forecast

If the recent trend holds, Northern Rough-winged Swallow in Piedmont is projected to stay roughly flat through 2029, near 2.3 (95% range 1.2–3.3). A 5-year backtest shows a typical error of ±28.5%, with 60% of held-out values landing inside the 95% band.

-5%Change by 2029
2.3Projected 2029 index
1.2–3.395% range
±28.5%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
20252.21.13.2
20262.21.13.3
20272.21.23.3
20282.21.23.3
20292.31.23.3

Routes In Piedmont

Routes recording Northern Rough-winged Swallow in Piedmont.
Curry HillGEORGIA652019
Barton CreekSOUTH-CAROLINA302022
WedoweeALABAMA282023
RutledgeGEORGIA252024
CampobelloSOUTH-CAROLINA252024
Mount JoyPENNSYLVANIA242024
Kite LakeGEORGIA152023
Brick TavernPENNSYLVANIA152024
WhitmireSOUTH-CAROLINA142024
HebronGEORGIA132022
SiloamNORTH-CAROLINA132017
JoannaSOUTH-CAROLINA132023
CrestGEORGIA122022
HiramGEORGIA122018
CopelandNORTH-CAROLINA122024
Bachman MillMARYLAND92024
MadonnaMARYLAND82022
Little MtnSOUTH-CAROLINA81988
FinchleyVIRGINIA82015
Nixburg 2ALABAMA72022
Holly SprsGEORGIA71999
Stoney Point 2GEORGIA72021
JordanNORTH-CAROLINA72022
FairplayGEORGIA61985
Yates CrossroadsGEORGIA62016

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