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

Northern House Wren In Piedmont

All regionsPiedmontForest birds

Northern House Wren in Piedmont has declined: down 31% on the route-weighted index since 1968.

-31%Since 1968
137Routes In Region
58Years

Notable Signals

No notable trend signals for Northern House Wren in Piedmont. See the full index history below.

Forecast

If the recent trend holds, Northern House Wren in Piedmont is projected to stay roughly flat through 2029, near 5.3 (95% range 3.4–7.2). A 5-year backtest shows a typical error of ±7.1%, with 100% of held-out values landing inside the 95% band.

+2%Change by 2029
5.3Projected 2029 index
3.4–7.295% range
±7.1%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
20255.43.67.3
20265.43.57.3
20275.43.57.2
20285.33.57.2
20295.33.47.2

Routes In Piedmont

Routes recording Northern House Wren in Piedmont.
EmmitsburgMARYLAND522024
WheatonMARYLAND422024
Croton 2NEW-JERSEY392024
EarltonMARYLAND312024
CollegevillePENNSYLVANIA312024
EkloMARYLAND302018
OlneyMARYLAND272024
MadonnaMARYLAND262022
West GrovePENNSYLVANIA241996
PottstownPENNSYLVANIA231987
Doe RunPENNSYLVANIA222024
WarfieldsbrgMARYLAND202024
GilletteNEW-JERSEY192024
Mt Gretna 2PENNSYLVANIA192022
RandallstownMARYLAND182013
BendersvillePENNSYLVANIA182024
IjamsvilleMARYLAND172024
SandbrookNEW-JERSEY172024
JacobusPENNSYLVANIA172024
AspersPENNSYLVANIA151989
Mount JoyPENNSYLVANIA152024
SchwenksvillPENNSYLVANIA152024
ChathamPENNSYLVANIA152024
GatchelvillePENNSYLVANIA141990
Silver SpgMARYLAND131989

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