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

Little Blue Heron In Piedmont

All regionsPiedmontWetland birds

Little Blue Heron in Piedmont has edged down: down 21% on the route-weighted index since 1973.

-21%Since 1973TrendPercent 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 →
19Routes 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 →
24YearsYears 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 Little Blue Heron in Piedmont. See the full index history below.

Little Blue Heron In Piedmont Population Forecast

If the recent trend holds, Little Blue Heron in Piedmont is projected to stay roughly flat through 2027, near 0.03 (95% range 0.00–0.17). A 5-year backtest shows a typical error of ±559.1%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2027TrendPercent 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 →
0.03Projected 2027 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.00–0.1795% 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 →
±559.1%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, Little Blue Heron in Piedmont is projected to stay roughly flat through 2027, near 0.03 (95% range 0.00–0.17). A 5-year backtest shows a typical error of ±559.1%, with 100% of held-out values landing inside the 95% band.19702027
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 →
20230.030.000.18
20240.030.000.18
20250.030.000.18
20260.030.000.17
20270.030.000.17

Routes In Piedmont

Routes recording Little Blue Heron 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 →
LincolntonGEORGIA42002
RolandGEORGIA32012
CampobelloSOUTH-CAROLINA32022
Barton CreekSOUTH-CAROLINA21982
MillervilleALABAMA11977
LanettALABAMA11999
WedoweeALABAMA12008
ForsythGEORGIA12002
CrestGEORGIA11990
HollonvilleGEORGIA11975
AthensGEORGIA12002
GrovetownGEORGIA12006
WashingtonGEORGIA11978
HebronGEORGIA12013
JordanNORTH-CAROLINA12011
CallNORTH-CAROLINA11972
JacobusPENNSYLVANIA11990
Little MtnSOUTH-CAROLINA11988
Plum BranchSOUTH-CAROLINA11985

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