BirdAnalyst
Species · West Virginia · BBS 2026 Release · 1966–2025

Northern Mockingbird Population Trend in West Virginia

All statesGeneralists

Northern Mockingbird in West Virginia has held roughly steady: up 4% on the route-weighted index since 1968.

+4%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 →
62Routes 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 →
59YearsYears 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 West VirginiaNotable 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 West Virginia. See the full index history below.

Northern Mockingbird Population Forecast in West Virginia

If the recent trend holds, Northern Mockingbird in West Virginia is projected to stay roughly flat through 2030, near 5.0 (95% range 2.5–7.4). A 5-year backtest shows a typical error of ±6.7%, with 100% of held-out values landing inside the 95% band.

+2%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 →
5.0Projected 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 →
2.5–7.495% 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 →
±6.7%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, Northern Mockingbird in West Virginia is projected to stay roughly flat through 2030, near 5.0 (95% range 2.5–7.4). A 5-year backtest shows a typical error of ±6.7%, with 100% of held-out values landing inside the 95% band.19662030
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 →
20264.92.57.3
20274.92.57.3
20284.92.57.4
20294.92.57.4
20305.02.57.4

Northern Mockingbird Survey Routes in West Virginia

Routes recording Northern Mockingbird in West Virginia.
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 →
Martinsburg2420251966
Sleepy Creek1919901966
Spencer1820241986
Hix1720251970
Pt Pleasant1520251973
Monongah1420221966
Hubbardstown1220251973
Meadland1220251997
Rockport1220251966
Slate1120251980
Shanghai1120251995
Smoot1020251980
Olcott920241967
Sugar Grove920251966
Greer820231968
Clinton820251966
Pedro720251979
Bebee720251972
Henderson720232002
Fayetteville619961980
Paradise620251966
Ruthbelle620252000
Ringgold620252025
Denmar520251990
Mt Storm519751968

Northern Mockingbird Population Trend in Other States

alabamaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwisconsinwyoming

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