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Species · Kansas · BBS 2025 Release · 1966–2024

Virginia Rail Population Trend in Kansas

All statesWetland birds

Virginia Rail in Kansas has declined: down 49% on the route-weighted index since 1976.

-49%Since 1976TrendPercent 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 →
6Routes 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 →
27YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Virginia Rail Trends in KansasNotable 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 Virginia Rail in Kansas. See the full index history below.

Virginia Rail Population Forecast in Kansas

If the recent trend holds, Virginia Rail in Kansas is projected to stay roughly flat through 2026, near 0.01 (95% range 0.00–0.10). A 5-year backtest shows a typical error of ±164%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2026TrendPercent 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 →
0.01Projected 2026 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.00–0.1095% 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 →
±164%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, Virginia Rail in Kansas is projected to stay roughly flat through 2026, near 0.01 (95% range 0.00–0.10). A 5-year backtest shows a typical error of ±164%, with 100% of held-out values landing inside the 95% band.19732026
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 →
20220.020.000.10
20230.020.000.10
20240.010.000.10
20250.010.000.10
20260.010.000.10

Virginia Rail Survey Routes in Kansas

Routes recording Virginia Rail in Kansas.
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 →
Lapland219881988
Damar120002000
Coats119751975
Albert120171973
Severance120212021
Olsburg120132007

Virginia Rail Population Trend in Other States

arizonacaliforniacoloradoconnecticutdelawareidahoillinoisindianaiowamainemarylandmassachusettsmichiganminnesotamontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-dakotautahvermontvirginiawashingtonwisconsinwyoming

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