BirdAnalyst
Species · Maryland · BBS 2025 Release · 1966–2024

Eastern Towhee Population Trend in Maryland

All statesGeneralists

Eastern Towhee in Maryland has declined: down 43% on the route-weighted index since 1968.

-43%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 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 26% by 2029 — from 8.4 in 2024 to a central estimate of 6.2 (95% range 2.6–9.9). A 5-year backtest shows a typical error of ±18.7%, with 100% of held-out values landing inside the 95% band.

-26%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 →
6.2Projected 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 →
2.6–9.995% 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 →
±18.7%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 26% by 2029 — from 8.4 in 2024 to a central estimate of 6.2 (95% range 2.6–9.9). A 5-year backtest shows a typical error of ±18.7%, with 100% 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 →
20256.63.010
20266.52.910
20276.42.810
20286.32.710.0
20296.22.69.9

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 →
Finzel6020241995
Jennings3920241995
Piney Grove3720241995
Olney2420241966
Green Ridge2420241995
La Plata2320091966
Mt Nebo2119911969
Cheltenham1920041966
Earlton1820242014
Forest Grove1620232011
Oldtown1420241970
Largo1419811966
Potomac Park1220241970
Smithsburg1120141966
Accident 21120242018
Floyd920241966
Jones919941966
Accident920171992
Wheaton920241990
Pt Republic819891966
Sinepuxent819781966
Vindex720241966
Emmitsburg720241966
Warfieldsbrg720241966
Williamsport620241967

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 2026-05-22.