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Species · Alabama · BBS 2026 Release · 1966–2025

Killdeer Population Trend in Alabama

All statesShorebirds

Killdeer in Alabama has held roughly steady: up 3% on the route-weighted index since 1968.

+3%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 →
101Routes 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 Killdeer 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 Killdeer in Alabama. See the full index history below.

Killdeer Population Forecast in Alabama

If the recent trend holds, Killdeer in Alabama is projected to fall about 26% by 2030 — from 2.3 in 2025 to a central estimate of 1.7 (95% range 1.0–2.4). A 5-year backtest shows a typical error of ±24.9%, with 60% of held-out values landing inside the 95% band.

-26%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 →
1.7Projected 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 →
1.0–2.495% 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 →
±24.9%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, Killdeer in Alabama is projected to fall about 26% by 2030 — from 2.3 in 2025 to a central estimate of 1.7 (95% range 1.0–2.4). A 5-year backtest shows a typical error of ±24.9%, with 60% 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 →
20261.71.12.4
20271.71.12.4
20281.71.12.4
20291.71.02.4
20301.71.02.4

Killdeer Survey Routes in Alabama

Routes recording Killdeer 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 →
Swaim1920251966
Carter Grove1520232002
Lakeview1020251999
Talladega1020251996
Valhermoso Spgs820101966
Rock Chapel820241996
Trade720241966
Brooksville720251985
Alabama Pt 2720192004
Kymulga720252001
Stevenson720241998
Hillsboro619961966
Valhermoso Spg 2620142014
Dawson519981966
Dearmanville519831966
Greensport520251967
Harrell520251968
Newton520241986
Calebee520251993
Wheeler Dam520251993
Drummond520242001
Pine Grove420251966
Howard420231967
Castleberry420251966
Childersburg419991987

Killdeer 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.