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

Mottled Duck Population Trend in Mississippi

All statesWaterfowl

Mottled Duck in Mississippi has collapsed: down 83% on the route-weighted index since 2001.

-83%Since 2001TrendPercent 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 →
4Routes 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 →
17YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Mottled 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 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 →

Mottled Duck has collapsed in Mississippi: down 83% on the route-weighted index since 2001.

Mottled Duck Survey Routes in Mississippi

Routes recording Mottled 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 →
Tippo320122012
Latimer 2220212021
Necaise220012001
Latimer120181998

Mottled Duck Population Trend in Other States

alabamaarkansasfloridakansaslouisianasouth-carolinatexas

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