BirdAnalyst
Species · Alabama · BBS 2026 Release · 1966–2025

Common Yellowthroat Population Trend in Alabama

All statesForest birds

Common Yellowthroat in Alabama has declined: down 42% on the route-weighted index since 1968.

-42%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 →
108Routes 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 →
59YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Common Yellowthroat Trends in AlabamaNotable 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 Common Yellowthroat in Alabama. See the full index history below.

Common Yellowthroat Population Forecast in Alabama

If the recent trend holds, Common Yellowthroat in Alabama is projected to fall about 24% by 2030 — from 5.2 in 2025 to a central estimate of 4.0 (95% range 1.5–6.4). A 5-year backtest shows a typical error of ±30.2%, with 100% of held-out values landing inside the 95% band.

-24%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 →
4.0Projected 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 →
1.5–6.495% 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 →
±30.2%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, Common Yellowthroat in Alabama is projected to fall about 24% by 2030 — from 5.2 in 2025 to a central estimate of 4.0 (95% range 1.5–6.4). A 5-year backtest shows a typical error of ±30.2%, with 100% of held-out values landing inside the 95% band.19662030
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 →
20264.21.76.6
20274.11.76.6
20284.11.66.5
20294.01.66.5
20304.01.56.4

Common Yellowthroat Survey Routes in Alabama

Routes recording Common Yellowthroat in Alabama.
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 →
Chacaloochee Bay1720192009
Linden1620231968
Bay Minette1420251996
Cottonton1320251969
Fairview1220251991
Nixburg 21220252000
Citronelle1220231997
Valhermoso Spgs1120101966
Howard1120251966
Carrollton1120251994
Wheeler Dam1120251993
Talladega1120252000
Helicon1120251997
Lanett1020241966
Borden Springs 21020242002
Eufaula1020241996
Hillsboro919961966
Summitt919811966
Greensport920251966
Liberty City920111980
Escatawpa920231983
Borden Sprng919981993
Perdido920252021
Gastonburg920241997
Dearmanville819831966

Common Yellowthroat Population Trend in Other States

alaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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