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

Dickcissel Population Trend in Mississippi

All statesGrassland birds

Dickcissel in Mississippi has surged: up 121% on the route-weighted index since 1968.

+121%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 →
34Routes 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 Dickcissel 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 increasecomputed 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 →

Dickcissel has surged in Mississippi: up 121% on the route-weighted index since 1968.

Dickcissel Population Forecast in Mississippi

If the recent trend holds, Dickcissel in Mississippi is projected to fall about 19% by 2029 — from 12 in 2024 to a central estimate of 9.6 (95% range 2.5–17). A 5-year backtest shows a typical error of ±25.5%, with 100% of held-out values landing inside the 95% band.

-19%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 →
9.6Projected 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 →
2.5–1795% 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 →
±25.5%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, Dickcissel in Mississippi is projected to fall about 19% by 2029 — from 12 in 2024 to a central estimate of 9.6 (95% range 2.5–17). A 5-year backtest shows a typical error of ±25.5%, with 100% of held-out values landing inside the 95% band.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 →
20259.42.316
20269.42.417
20279.52.417
20289.52.417
20299.62.517

Dickcissel Survey Routes in Mississippi

Routes recording Dickcissel 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 →
Tippo8120241996
Dundee7420221970
Dahomey Nwr6120242011
Isola5820221968
Winterville2820112009
Shelby2620242009
Commerce2319931966
Macon2120241969
Tallahatchie1720241996
Moon1620211996
Aberdeen1520241970
Olive Branch1220011966
Panther Swamp Nwr920182016
Benton820181972
Cockrum320231966
Fayette219701969
Walthall219871971
Tchula 3220241995
Olive Branch 2220222016
Embry220131989
Beverly119911969
Tchula119751970
Utica119941980
Lucien119721972
Duck Hill119941971

Dickcissel Population Trend in Other States

alabamaarkansascoloradodelawaregeorgiaillinoisindianaiowakansaskentuckylouisianamarylandmichiganminnesotamissourimontananebraskanew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomapennsylvaniasouth-carolinasouth-dakotatennesseetexasvirginiawest-virginiawisconsinwyoming

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