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

Broad-winged Hawk In Piedmont

All regionsPiedmontGeneralists

Broad-winged Hawk in Piedmont has declined: down 44% on the route-weighted index since 1968.

-44%Since 1968TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
117Routes In RegionSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
58YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable SignalsNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

No notable trend signals for Broad-winged Hawk in Piedmont. See the full index history below.

Forecast

If the recent trend holds, Broad-winged Hawk in Piedmont is projected to rise about 24% by 2029 — from 0.07 in 2024 to a central estimate of 0.08 (95% range 0.00–0.19). A 5-year backtest shows a typical error of ±28.2%, with 100% of held-out values landing inside the 95% band.

+24%Change by 2029TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
0.08Projected 2029 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.00–0.1995% range95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
±28.2%Backtest errorBacktest errorTypical error when we hold out the most recent years, forecast them, and compare to what actually happened. Lower means a more trustworthy projection.Full methodology →
If the recent trend holds, Broad-winged Hawk in Piedmont is projected to rise about 24% by 2029 — from 0.07 in 2024 to a central estimate of 0.08 (95% range 0.00–0.19). A 5-year backtest shows a typical error of ±28.2%, with 100% of held-out values landing inside the 95% band.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 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →95% low95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →95% high95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
20250.090.000.19
20260.090.000.19
20270.090.000.19
20280.080.000.19
20290.080.000.19

Routes In Piedmont

Routes recording Broad-winged Hawk in Piedmont.
Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology →
LanettALABAMA32022
BaldwinGEORGIA32013
Mount AiryNORTH-CAROLINA32016
Liberty CityALABAMA22010
Liberty City 2ALABAMA22019
Ball GroundGEORGIA22021
RolandGEORGIA22024
CrotonNEW-JERSEY21990
SaxapahawNORTH-CAROLINA21986
WilgroveNORTH-CAROLINA22019
GatchelvillePENNSYLVANIA21983
TrymeVIRGINIA22011
PartlowVIRGINIA21983
CovesvilleVIRGINIA22013
WylliesburgVIRGINIA22009
GladysVIRGINIA22012
MillervilleALABAMA12024
NixburgALABAMA11999
Nixburg 2ALABAMA12023
WedoweeALABAMA12023
ForsythGEORGIA12003
CrestGEORGIA12016
MaxeysGEORGIA12010
HollonvilleGEORGIA11977
FairplayGEORGIA11990

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