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Species · Maryland · BBS 2025 Release · 1966–2024

Eastern Wood-Pewee Population Trend in Maryland

All statesAerial insectivores

Eastern Wood-Pewee in Maryland has surged: up 93% on the route-weighted index since 1968.

+93%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 Wood-Pewee 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 →

long arc increasecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Eastern Wood-Pewee has surged in Maryland: up 93% on the route-weighted index since 1968.

Eastern Wood-Pewee Population Forecast in Maryland

If the recent trend holds, Eastern Wood-Pewee in Maryland is projected to fall about 17% by 2029 — from 13 in 2024 to a central estimate of 11 (95% range 8.5–13). A 5-year backtest shows a typical error of ±22.9%, with 20% of held-out values landing inside the 95% band.

-17%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 →
11Projected 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 →
8.5–1395% 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 →
±22.9%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, Eastern Wood-Pewee in Maryland is projected to fall about 17% by 2029 — from 13 in 2024 to a central estimate of 11 (95% range 8.5–13). A 5-year backtest shows a typical error of ±22.9%, with 20% 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 →
2025118.213
2026118.313
2027118.313
2028118.413
2029118.513

Eastern Wood-Pewee Survey Routes in Maryland

Routes recording Eastern Wood-Pewee 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 →
Earlton4720242014
Island Creek3320241991
Piney Grove2920241995
Green Ridge2820241995
Smithsburg2520141970
Emmitsburg2520241966
Olney2320241966
Madonna2320222009
Ijamsville2220241986
Davidsnville2020241982
Williamsport1920241966
Nottingham1920242005
Wolfsville1820241966
Oldtown1720241970
Jennings1620241995
Eklo1520181966
Madison1520241966
Pt Republic1419891966
Finzel1420241995
Jessup1420242013
Warfieldsbrg1320241966
Hughesville1320241966
Forest Grove1320232011
Furnace Town1320242015
Pomonkey1220241966

Eastern Wood-Pewee Population Trend in Other States

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

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