BirdAnalyst
Species · BCR 29 · BBS 2026 Release · 1966–2025

Dickcissel In Piedmont

All regionsPiedmontGrassland birds

Dickcissel in Piedmont has surged: up 109% on the route-weighted index since 1980.

+109%Since 1980TrendPercent 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 →
30Routes 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 →
38YearsYears 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 Dickcissel in Piedmont. See the full index history below.

Dickcissel In Piedmont Population Forecast

If the recent trend holds, Dickcissel in Piedmont is projected to rise about 13% by 2030 — from 0.10 in 2025 to a central estimate of 0.12 (95% range 0.01–0.23). A 5-year backtest shows a typical error of ±106.9%, with 100% of held-out values landing inside the 95% band.

+13%Change by 2030TrendPercent 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 →
0.12Projected 2030 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.01–0.2395% 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 →
±106.9%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, Dickcissel in Piedmont is projected to rise about 13% by 2030 — from 0.10 in 2025 to a central estimate of 0.12 (95% range 0.01–0.23). A 5-year backtest shows a typical error of ±106.9%, with 100% of held-out values landing inside the 95% band.19702030
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 →
20260.110.000.23
20270.110.000.23
20280.120.000.23
20290.120.000.23
20300.120.010.23

Routes In Piedmont

Routes recording Dickcissel 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 →
DavidVIRGINIA62000
AthensGEORGIA42025
WacoNORTH-CAROLINA42004
FlayNORTH-CAROLINA42005
EmmitsburgMARYLAND32025
MonticelloNORTH-CAROLINA32018
AspersPENNSYLVANIA31988
JoannaSOUTH-CAROLINA32006
StockbridgeGEORGIA22014
Sunny SideGEORGIA22018
Mooresville 2NORTH-CAROLINA22023
WilgroveNORTH-CAROLINA22019
Brandy StationVIRGINIA22025
LanettALABAMA11993
MaxeysGEORGIA12011
SiloamGEORGIA11995
RutledgeGEORGIA12021
HebronGEORGIA12005
Silver SpgMARYLAND11980
RandallstownMARYLAND11980
IjamsvilleMARYLAND12017
YoungsvilleNORTH-CAROLINA12017
OwingsSOUTH-CAROLINA11996
CampobelloSOUTH-CAROLINA12018
AndersonSOUTH-CAROLINA12017

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14.