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Species · Maryland · BBS 2025 Release · 1966–2024

Eastern Kingbird Population Trend in Maryland

All statesAerial insectivores

Eastern Kingbird in Maryland has held roughly steady: down 2% on the route-weighted index since 1968.

-2%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 →
76Routes 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 Eastern Kingbird Trends in MarylandNotable 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 Eastern Kingbird in Maryland. See the full index history below.

Eastern Kingbird Population Forecast in Maryland

If the recent trend holds, Eastern Kingbird in Maryland is projected to fall about 12% by 2029 — from 4.2 in 2024 to a central estimate of 3.7 (95% range 2.4–5.0). A 5-year backtest shows a typical error of ±26.2%, with 40% of held-out values landing inside the 95% band.

-12%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 →
3.7Projected 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 →
2.4–5.095% 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 →
±26.2%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, Eastern Kingbird in Maryland is projected to fall about 12% by 2029 — from 4.2 in 2024 to a central estimate of 3.7 (95% range 2.4–5.0). A 5-year backtest shows a typical error of ±26.2%, with 40% 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 →
20253.72.45.0
20263.72.45.0
20273.72.45.0
20283.72.45.0
20293.72.45.0

Eastern Kingbird Survey Routes in Maryland

Routes recording Eastern Kingbird in Maryland.
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 →
Ijamsville2820241986
Madonna1920222009
Williamsport1820241966
La Plata1420091966
Olney1320241966
Jones1319941966
Emmitsburg1120241966
Warfieldsbrg1020241966
Wheaton1020241990
Largo819811966
Elkton820241966
Honga820241966
Eklo720181966
Beltsville620121966
Harmony620171966
Fruitland619981966
Sinepuxent619771967
Walnut620242000
Earlton620242014
Smithsburg520141966
Wolfsville520241968
Silver Spg519891966
Randallstown520131966
Mardela520191966
Cokesbury520241966

Eastern Kingbird Population Trend in Other States

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

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