BirdAnalyst
Species · BCR 37 · BBS 2025 Release · 1966–2024

Ruddy Duck In Gulf Coastal Prairie

All regionsGulf Coastal PrairieWaterfowl

Ruddy Duck in Gulf Coastal Prairie has collapsed: down 76% on the route-weighted index since 2000.

-76%Since 2000TrendPercent 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 →
6Routes 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 →
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 SignalsNotable 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 →

Ruddy Duck has collapsed in Gulf Coastal Prairie: down 76% on the route-weighted index since 2000.

Routes In Gulf Coastal Prairie

Routes recording Ruddy Duck in Gulf Coastal Prairie.
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 →
Loyola BeachTEXAS252008
Bayside 3TEXAS152011
Loyola Beach 2TEXAS52016
Rock IslandTEXAS22010
San PedroTEXAS11999
L. Atascosa NwrTEXAS12016

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