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

Summer Tanager Population Trend in Georgia

All statesGeneralists

Summer Tanager in Georgia has edged down: down 13% on the route-weighted index since 1968.

-13%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 →
109Routes 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 →
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 Summer Tanager 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 →

No notable trend signals for Summer Tanager in Georgia. See the full index history below.

Summer Tanager Population Forecast in Georgia

If the recent trend holds, Summer Tanager in Georgia is projected to fall about 14% by 2029 — from 6.5 in 2024 to a central estimate of 5.7 (95% range 3.6–7.7). A 5-year backtest shows a typical error of ±23.7%, with 80% of held-out values landing inside the 95% band.

-14%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 →
5.7Projected 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 →
3.6–7.795% 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 →
±23.7%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, Summer Tanager in Georgia is projected to fall about 14% by 2029 — from 6.5 in 2024 to a central estimate of 5.7 (95% range 3.6–7.7). A 5-year backtest shows a typical error of ±23.7%, with 80% 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 →
20255.63.67.6
20265.63.67.6
20275.63.67.6
20285.63.67.6
20295.73.67.7

Summer Tanager Survey Routes in Georgia

Routes recording Summer Tanager 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 →
Deepstep3320231975
Piedmont Nwr2720031991
Roland1920242005
Carrs Station1820242008
Lincolnton 21720242018
Tazewell1620241967
Hawkinsville1520241966
Rentz1520241977
Baxley1420191966
Rutledge1420241975
Juliette1420241976
Woodbine1420242011
White Hill1420242005
Ousley1420242015
Workmore1320191978
Keller1219941975
Fowlstown1120161967
Shannon1120191975
Whitesburg1120241992
Pineora 21120242024
Irwinton1120242016
Maxeys1020241966
Millen1020242006
Henderson920241973
Grovetown920211975

Summer Tanager Population Trend in Other States

alabamaarizonaarkansascaliforniadelawarefloridaillinoisindianaiowakansaskentuckylouisianamarylandmississippimissourinebraskanevadanew-jerseynew-mexiconorth-carolinaohiooklahomapennsylvaniasouth-carolinatennesseetexasutahvirginiawest-virginiawisconsin

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