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

Veery Population Trend in Pennsylvania

All statesForest birds

Veery in Pennsylvania 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 →
113Routes 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 Veery Trends in PennsylvaniaNotable 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 →

Veery has surged in Pennsylvania: up 93% on the route-weighted index since 1968.

Veery Population Forecast in Pennsylvania

If the recent trend holds, Veery in Pennsylvania is projected to stay roughly flat through 2029, near 4.2 (95% range 2.8–5.6). A 5-year backtest shows a typical error of ±17.8%, with 100% of held-out values landing inside the 95% band.

-5%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 →
4.2Projected 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 →
2.8–5.695% 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 →
±17.8%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, Veery in Pennsylvania is projected to stay roughly flat through 2029, near 4.2 (95% range 2.8–5.6). A 5-year backtest shows a typical error of ±17.8%, 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 →
20254.12.75.5
20264.12.75.5
20274.12.85.5
20284.22.85.5
20294.22.85.6

Veery Survey Routes in Pennsylvania

Routes recording Veery in Pennsylvania.
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 →
Susquehanna2820241971
Mawr Glen2720241982
Poyntelle2420241969
Starlight 22420242000
Laurel Hill2320241978
Marsh Hill2120241983
Ansonia2120242002
Ellenton2020241982
Wild Creek2020241988
Roulette1920211970
Starlight1919991970
Canadensis1920241973
Broad Mtn.1920241993
Greentown1620241969
Odin1520241973
Honesdale1320241972
Cherry Sprs1120231974
Roulette 21120242022
Eldred1020221973
Sugar Grove920241981
Betula820221973
Pocono Summit820241966
Sproul Sf-A820242002
Normalville719741972
Munson620241979

Veery Population Trend in Other States

alabamaalaskacoloradoconnecticutdelawaregeorgiaidahoillinoisindianakentuckymainemarylandmassachusettsmichiganminnesotamontananebraskanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooregonrhode-islandsouth-dakotatennesseeutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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