BirdAnalyst
Species · New Hampshire · BBS 2025 Release · 1966–2024

European Starling Population Trend in New Hampshire

All statesGeneralists

European Starling in New Hampshire has collapsed: down 82% on the route-weighted index since 1968.

-82%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 →
26Routes 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 European Starling Trends in New HampshireNotable 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 declinecomputed 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 →

European Starling has collapsed in New Hampshire: down 82% on the route-weighted index since 1968.

European Starling Population Forecast in New Hampshire

If the recent trend holds, European Starling in New Hampshire is projected to fall about 100% by 2029 — from 8.5 in 2024 to a central estimate of 0.00 (95% range 0.00–11). A 5-year backtest shows a typical error of ±86.9%, with 100% of held-out values landing inside the 95% band.

-100%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 →
0.00Projected 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 →
0.00–1195% 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 →
±86.9%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, European Starling in New Hampshire is projected to fall about 100% by 2029 — from 8.5 in 2024 to a central estimate of 0.00 (95% range 0.00–11). A 5-year backtest shows a typical error of ±86.9%, 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 →
20250.990.0012
20260.090.0011
20270.000.0011
20280.000.0011
20290.000.0011

European Starling Survey Routes in New Hampshire

Routes recording European Starling in New Hampshire.
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 →
Concord3320241966
Fitzwilliam3220241966
Canterbury3120241966
Jeffers Ntch2020031994
East Kingston1920241999
Brentwood1819981966
Dixville Notch 21420242018
Epsom1220231966
Milan1220241966
Dixvil Notch1220171966
Marlow1020241966
Hopkinton720241966
Mt Chocorua720241966
Lempster620241966
Wilmot520241966
Crawford Not419751966
Stratford320221966
Peterborough220241966
Dover220241966
Strafford220241966
Gilmantn I W220241969
Walpole220241966
Jefferson Hl120231966
Franconia120221966
Clarksville120211966

European Starling Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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