BirdAnalyst
Species · Mississippi · BBS 2026 Release · 1966–2025

Black-bellied Whistling-Duck Population Trend in Mississippi

All statesWaterfowl

Black-bellied Whistling-Duck in Mississippi has surged: up 18× on the route-weighted index since 2015.

18×Since 2015TrendPercent 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 →
11Routes 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 →
12YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Black-bellied Whistling-Duck 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 →

Black-bellied Whistling-Duck has surged in Mississippi: up 18× on the route-weighted index since 2015.

Black-bellied Whistling-Duck Survey Routes in Mississippi

Routes recording Black-bellied Whistling-Duck 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 →
Isola1720222021
Eagle Lake1320252015
Necaise720222022
Latimer 2520232022
Tchula 3520252009
Shelby220232023
Panther Swamp Nwr220182017
Dahomey Nwr220252011
Latimer120182016
Delta N.F.120212021
Tallahatchie120242019

Black-bellied Whistling-Duck Population Trend in Other States

alabamaarizonaarkansasfloridageorgiaillinoisindianalouisianamissourinebraskanorth-carolinaoklahomasouth-carolinatennesseetexas

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