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Species · Alabama · BBS 2025 Release · 1966–2024

Gray Kingbird Population Trend in Alabama

All statesAerial insectivores

Gray Kingbird in Alabama has declined: down 41% on the route-weighted index since 1984.

-41%Since 1984TrendPercent 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 →
4Routes 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 →
22YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Gray Kingbird 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 Gray Kingbird in Alabama. See the full index history below.

Gray Kingbird Population Forecast in Alabama

If the recent trend holds, Gray Kingbird in Alabama is projected to stay roughly flat through 2020, near 0.01 (95% range 0.00–0.04). A 5-year backtest shows a typical error of ±28%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2020TrendPercent 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 →
0.01Projected 2020 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.00–0.0495% 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 →
±28%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, Gray Kingbird in Alabama is projected to stay roughly flat through 2020, near 0.01 (95% range 0.00–0.04). A 5-year backtest shows a typical error of ±28%, with 100% of held-out values landing inside the 95% band.19722020
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 →
20160.020.000.04
20170.020.000.04
20180.020.000.04
20190.020.000.04
20200.010.000.04

Gray Kingbird Survey Routes in Alabama

Routes recording Gray Kingbird 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 →
Dauphin Is219881984
Alabama Pt219961972
Alabama Pt 2220152006
Dauphin Is 2120111991

Gray Kingbird Population Trend in Other States

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