BirdAnalyst
Species · New Hampshire · BBS 2026 Release · 1966–2025

Northern Mockingbird Population Trend in New Hampshire

All statesGeneralists

Northern Mockingbird in New Hampshire has surged: up 933% on the route-weighted index since 1969.

+933%Since 1969TrendPercent 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 →
24Routes 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 Northern Mockingbird 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 →

No notable trend signals for Northern Mockingbird in New Hampshire. See the full index history below.

Northern Mockingbird Population Forecast in New Hampshire

If the recent trend holds, Northern Mockingbird in New Hampshire is projected to rise about 87% by 2030 — from 0.43 in 2025 to a central estimate of 0.81 (95% range 0.00–2.1). A 5-year backtest shows a typical error of ±117.5%, with 100% of held-out values landing inside the 95% band.

+87%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 →
0.81Projected 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 →
0.00–2.195% 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 →
±117.5%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, Northern Mockingbird in New Hampshire is projected to rise about 87% by 2030 — from 0.43 in 2025 to a central estimate of 0.81 (95% range 0.00–2.1). A 5-year backtest shows a typical error of ±117.5%, with 100% of held-out values landing inside the 95% band.19672030
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 →
20260.820.002.1
20270.820.002.1
20280.820.002.1
20290.810.002.1
20300.810.002.1

Northern Mockingbird Survey Routes in New Hampshire

Routes recording Northern Mockingbird 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 →
Marlow1020071980
Brentwood919981972
Clarksville420011971
Concord320251970
Epsom220241978
Glen220251981
Peterborough120251977
Fitzwilliam120131975
Dover120251967
Hopkinton119951976
Strafford120221979
Canterbury120181987
Gilmantn I W120251979
Wilmot120232003
Mt Chocorua120232000
Walpole120141976
Lempster119921980
Jefferson Hl120161991
Franconia120191989
Milan120031984
Stratford120252001
Dixvil Notch119991994
East Kingston120251999
Jeffers Ntch120062006

Northern Mockingbird Population Trend in Other States

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

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