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Species · Mississippi · BBS 2025 Release · 1966–2024

White Ibis Population Trend in Mississippi

All statesWetland birds

White Ibis in Mississippi has held roughly steady: down 5% on the route-weighted index since 1977.

-5%Since 1977TrendPercent 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 →
22Routes 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 →
38YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable White Ibis 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 →

No notable trend signals for White Ibis in Mississippi. See the full index history below.

White Ibis Population Forecast in Mississippi

If the recent trend holds, White Ibis in Mississippi is projected to rise about 84% by 2029 — from 0.68 in 2024 to a central estimate of 1.3 (95% range 0.00–3.9). A 5-year backtest shows a typical error of ±275.5%, with 100% of held-out values landing inside the 95% band.

+84%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 →
1.3Projected 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 →
0.00–3.995% 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 →
±275.5%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, White Ibis in Mississippi is projected to rise about 84% by 2029 — from 0.68 in 2024 to a central estimate of 1.3 (95% range 0.00–3.9). A 5-year backtest shows a typical error of ±275.5%, with 100% of held-out values landing inside the 95% band.19742029
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 →
20251.20.003.8
20261.20.003.8
20271.20.003.9
20281.30.003.9
20291.30.003.9

White Ibis Survey Routes in Mississippi

Routes recording White Ibis 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 →
Tchula 22919791979
Tippo2519961996
Moon2120092009
Panther Swamp Nwr2020182017
Fort Adams1820041994
Benton1220172016
Tchula 31220242007
Benndale1020211979
Trace Central820222022
Tallahatchie620172017
Neely420072001
Columbia320181974
Latimer 2320212021
Delta N.F.220212004
Macon220232023
Waynesboro220052005
Latimer220192011
Lake Mary119871974
Beverly119891989
Cybur119751974
Eagle Lake120242015
Necaise120162008

White Ibis Population Trend in Other States

alabamaarkansasfloridageorgialouisianamarylandnew-jerseynorth-carolinaoklahomasouth-carolinatexasvirginia

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