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Species · Maryland · BBS 2026 Release · 1966–2025

Eastern Towhee Population Trend in Maryland

All statesForest birds

Eastern Towhee in Maryland has declined: down 47% on the route-weighted index since 1968.

-47%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 →
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 Eastern Towhee 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 Towhee in Maryland. See the full index history below.

Eastern Towhee Population Forecast in Maryland

If the recent trend holds, Eastern Towhee in Maryland is projected to fall about 10% by 2030 — from 6.9 in 2025 to a central estimate of 6.2 (95% range 2.6–9.8). A 5-year backtest shows a typical error of ±18.2%, with 100% of held-out values landing inside the 95% band.

-10%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 →
6.2Projected 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 →
2.6–9.895% 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 →
±18.2%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 Towhee in Maryland is projected to fall about 10% by 2030 — from 6.9 in 2025 to a central estimate of 6.2 (95% range 2.6–9.8). A 5-year backtest shows a typical error of ±18.2%, 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 →
20266.52.910
20276.42.810
20286.32.89.9
20296.32.79.9
20306.22.69.8

Eastern Towhee Survey Routes in Maryland

Routes recording Eastern Towhee 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 →
Jennings4020251995
Finzel3820251995
Piney Grove3420251995
La Plata2320091966
Green Ridge2220251995
Mt Nebo2119911969
Cheltenham1920041966
Earlton1820242014
Forest Grove1620232011
Floyd1420251966
Largo1419811966
Oldtown1320251970
Olney1320251966
Smithsburg1120141966
Accident 21120252018
Jones919941966
Accident920171992
Pt Republic819891966
Sinepuxent819781966
Ijamsville820251986
Vindex720241966
Madison720251966
Wheaton720251990
Eklo620181966
Beltsville620121966

Eastern Towhee Population Trend in Other States

alabamaarkansasconnecticutdelawarefloridageorgiaillinoisindianaiowakansaskentuckylouisianamainemassachusettsmichiganminnesotamississippimissourimontananebraskanew-hampshirenew-jerseynew-yorknorth-carolinanorth-dakotaohiooklahomapennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasvermontvirginiawest-virginiawisconsinwyoming

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