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Species · BCR 26 · BBS 2026 Release · 1966–2025

White Ibis In Mississippi Alluvial Valley

All regionsMississippi Alluvial ValleyWetland birds

White Ibis in Mississippi Alluvial Valley has increased: up 38% on the route-weighted index since 1970.

+38%Since 1970TrendPercent 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 →
39Routes In RegionSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
53YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable SignalsNotable 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 Alluvial Valley. See the full index history below.

White Ibis In Mississippi Alluvial Valley Population Forecast

If the recent trend holds, White Ibis in Mississippi Alluvial Valley is projected to rise about 170% by 2030 — from 6.4 in 2025 to a central estimate of 17 (95% range 0.00–38). A 5-year backtest shows a typical error of ±377.8%, with 100% of held-out values landing inside the 95% band.

+170%Change by 2030TrendPercent 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 →
17Projected 2030 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.00–3895% 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 →
±377.8%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 Alluvial Valley is projected to rise about 170% by 2030 — from 6.4 in 2025 to a central estimate of 17 (95% range 0.00–38). A 5-year backtest shows a typical error of ±377.8%, with 100% of held-out values landing inside the 95% band.19672030
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 →
2026160.0037
2027170.0038
2028170.0038
2029170.0038
2030170.0038

Routes In Mississippi Alluvial Valley

Routes recording White Ibis in Mississippi Alluvial Valley.
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 →
KeystoneLOUISIANA2652013
AtchafalayaLOUISIANA1262025
RamahLOUISIANA632025
FreetownLOUISIANA492009
Morgan CityLOUISIANA471986
ShawLOUISIANA432024
FloydLOUISIANA352002
MayflowerLOUISIANA342024
Tchula 2MISSISSIPPI291979
KraemerLOUISIANA282024
RayvilleLOUISIANA251996
TippoMISSISSIPPI251996
MoonMISSISSIPPI212009
Panther Swamp NwrMISSISSIPPI202018
TallahatchieMISSISSIPPI182025
BrousvilleLOUISIANA162025
Morgan CityLOUISIANA132022
FrogmoreLOUISIANA102021
ConcordLOUISIANA82011
GonzalesLOUISIANA72019
DelhiLOUISIANA52017
Tchula 3MISSISSIPPI52025
GibsonLOUISIANA42015
Tensas NwrLOUISIANA42024
LaroseLOUISIANA31990

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14.