BirdAnalyst
Species · West Virginia · BBS 2025 Release · 1966–2024

Northern Mockingbird Population Trend in West Virginia

All statesGeneralists

Northern Mockingbird in West Virginia has held roughly steady: up 5% on the route-weighted index since 1968.

+5%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 →
61Routes 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 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 rise about 11% by 2029 — from 4.4 in 2024 to a central estimate of 4.9 (95% range 2.5–7.4). A 5-year backtest shows a typical error of ±12.1%, with 100% of held-out values landing inside the 95% band.

+11%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 →
4.9Projected 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 →
2.5–7.495% 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 →
±12.1%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 →
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 →
20254.92.47.3
20264.92.57.3
20274.92.57.3
20284.92.57.4
20294.92.57.4

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 →
Martinsburg3220241966
Shanghai2120221995
Paradise2020231966
Slate1920241980
Sleepy Creek1919901966
Welch1620231980
Bramwell1420231978
Monongah1420221966
Pt Pleasant1320231973
Smoot1120241980
Spencer1120231986
Hix1020241970
Sugar Grove1020241966
Smithfield1020211993
Hanover920241995
Hubbardstown920231973
Olcott920241967
Sutton920241976
Greer820231968
Lost River820231996
Clear Creek720241988
Henderson720232002
Fayetteville619961980
Meadland620241997
Rockport620241966

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 2026-05-22.