BirdAnalyst
Species · Georgia · BBS 2025 Release · 1966–2024

Dickcissel Population Trend in Georgia

All statesGrassland birds

Dickcissel in Georgia has surged: up 212% on the route-weighted index since 1980.

+212%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 →
20Routes In StateSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
29YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

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

long arc increasecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Dickcissel has surged in Georgia: up 211% on the route-weighted index since 1980.

Dickcissel Population Forecast in Georgia

If the recent trend holds, Dickcissel in Georgia is projected to rise about 67% by 2029 — from 0.09 in 2024 to a central estimate of 0.15 (95% range 0.05–0.26). A 5-year backtest shows a typical error of ±83.8%, with 100% of held-out values landing inside the 95% band.

+67%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 →
0.15Projected 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 →
0.05–0.2695% 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 →
±83.8%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 Georgia is projected to rise about 67% by 2029 — from 0.09 in 2024 to a central estimate of 0.15 (95% range 0.05–0.26). A 5-year backtest shows a typical error of ±83.8%, with 100% of held-out values landing inside the 95% band.19782029
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 →
20250.140.040.24
20260.140.040.25
20270.150.040.25
20280.150.050.25
20290.150.050.26

Dickcissel Survey Routes in Georgia

Routes recording Dickcissel in Georgia.
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 →
Athens520242011
Linwood220182017
Stockbridge220142005
Finleyson220031984
Wadley219971992
Philema220232021
Sunny Side220182009
Davis Crossroads220212018
Fitzgerald120212021
Cuthbert120172013
Maxeys120112011
Oakman119791978
Henderson120231980
Siloam119951987
Lacross119831983
Rutledge120211998
Rentz120172015
Shiloh120192019
Owensboro120242024
Hebron120052005

Dickcissel Population Trend in Other States

alabamaarkansascoloradodelawareillinoisindianaiowakansaskentuckylouisianamarylandmichiganminnesotamississippimissourimontananebraskanew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomapennsylvaniasouth-carolinasouth-dakotatennesseetexasvirginiawest-virginiawisconsinwyoming

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