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

Bobolink In Piedmont

All regionsPiedmontGrassland birds

Bobolink in Piedmont has held roughly steady: down 8% on the route-weighted index since 1973.

-8%Since 1973
16Routes In Region
52Years

Notable Signals

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

Forecast

If the recent trend holds, Bobolink in Piedmont is projected to stay roughly flat through 2029, near 0.08 (95% range 0.00–0.30). A 5-year backtest shows a typical error of ±140.2%, with 100% of held-out values landing inside the 95% band.

+0%Change by 2029
0.08Projected 2029 index
0.00–0.3095% range
±140.2%Backtest error
19702029
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
20250.090.000.31
20260.080.000.31
20270.080.000.31
20280.080.000.31
20290.080.000.30

Routes In Piedmont

Routes recording Bobolink in Piedmont.
West GrovePENNSYLVANIA81992
EmmitsburgMARYLAND72024
Brick TavernPENNSYLVANIA61991
GilletteNEW-JERSEY42015
IjamsvilleMARYLAND32002
TaylorstownVIRGINIA32007
BendersvillePENNSYLVANIA22017
ShrewsburyPENNSYLVANIA21996
WarfieldsbrgMARYLAND12016
SandbrookNEW-JERSEY12023
CrotonNEW-JERSEY12007
PottersvilleNEW-JERSEY12023
CollegevillePENNSYLVANIA12016
Doe RunPENNSYLVANIA12006
Mt Gretna 2PENNSYLVANIA12014
ChathamPENNSYLVANIA12021

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