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Species · Georgia · BBS 2025 Release · 1966–2024

Blue-headed Vireo Population Trend in Georgia

All statesForest birds

Blue-headed Vireo in Georgia has surged: up 117% on the route-weighted index since 1976.

+117%Since 1976TrendPercent 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 →
24Routes 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 →
48YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Blue-headed Vireo 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 →

Blue-headed Vireo has surged in Georgia: up 117% on the route-weighted index since 1976.

Blue-headed Vireo Population Forecast in Georgia

If the recent trend holds, Blue-headed Vireo in Georgia is projected to rise about 65% by 2029 — from 0.20 in 2024 to a central estimate of 0.33 (95% range 0.09–0.56). A 5-year backtest shows a typical error of ±108.2%, with 80% of held-out values landing inside the 95% band.

+65%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 →
0.33Projected 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 →
0.09–0.5695% 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 →
±108.2%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, Blue-headed Vireo in Georgia is projected to rise about 65% by 2029 — from 0.20 in 2024 to a central estimate of 0.33 (95% range 0.09–0.56). A 5-year backtest shows a typical error of ±108.2%, with 80% of held-out values landing inside the 95% band.19672029
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 →
20250.310.070.55
20260.310.070.55
20270.320.080.56
20280.320.080.56
20290.330.090.56

Blue-headed Vireo Survey Routes in Georgia

Routes recording Blue-headed Vireo 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 →
Baxter1020221975
Mountain Cty920241975
Ball Ground520212019
Piedmont Nwr420031992
Grovetown319811981
Juliette320161993
Sharon220222018
Forsyth119941994
Crest120182005
Lincolnton120082008
Maxeys120172017
Cartersville120241996
Baldwin120071967
Siloam119671967
Bowdon120161991
Rutledge120051998
Washington120241976
Stoney Point 2120132013
Carrs Station120212011
Yates Crossroads120242006
Rock Branch120172005
Hebron120122006
Lincolnton 2120242019
Whitesburg120051995

Blue-headed Vireo Population Trend in Other States

alabamaconnecticutkentuckymainemarylandmassachusettsmichiganminnesotanew-hampshirenew-jerseynew-yorknorth-carolinanorth-dakotaohiopennsylvaniarhode-islandsouth-carolinatennesseevermontvirginiawest-virginiawisconsin

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