BirdAnalyst
Species · Mississippi · BBS 2025 Release · 1966–2024

Bewick's Wren Population Trend in Mississippi

All statesForest birds

Bewick's Wren in Mississippi has fallen sharply: down 73% on the route-weighted index since 1968.

-73%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 →
10Routes 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 →
19YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Bewick's Wren Trends in MississippiNotable 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 →

Bewick's Wren has fallen sharply in Mississippi: down 73% on the route-weighted index since 1968.

Bewick's Wren Population Forecast in Mississippi

If the recent trend holds, Bewick's Wren in Mississippi is projected to stay roughly flat through 1995, near 0.00 (95% range 0.00–0.49). A 5-year backtest shows a typical error of ±118.7%, with 100% of held-out values landing inside the 95% band.

n/aChange by 1995TrendPercent 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 1995 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.00–0.4995% 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 →
±118.7%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, Bewick's Wren in Mississippi is projected to stay roughly flat through 1995, near 0.00 (95% range 0.00–0.49). A 5-year backtest shows a typical error of ±118.7%, with 100% of held-out values landing inside the 95% band.19661995
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 →
19910.000.000.49
19920.000.000.49
19930.000.000.49
19940.000.000.49
19950.000.000.49

Bewick's Wren Survey Routes in Mississippi

Routes recording Bewick's Wren in Mississippi.
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 →
Olive Branch219691969
Walthall219791971
Duck Hill219741970
Commerce119711971
Cockrum119841966
Embry119901990
Corinth119791974
Tupelo119741966
Macon119721972
Aberdeen119701970

Bewick's Wren Population Trend in Other States

alabamaarizonaarkansascaliforniacoloradoidahoillinoisindianaiowakansaskentuckymarylandmissourinevadanew-mexiconorth-carolinaohiooklahomaoregonpennsylvaniatennesseetexasutahvirginiawashingtonwest-virginiawisconsinwyoming

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