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

Purple Gallinule Population Trend in Alabama

All statesWetland birds

Purple Gallinule in Alabama has fallen sharply: down 73% on the route-weighted index since 1975.

-73%Since 1975TrendPercent 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 StateSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
15YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Purple Gallinule Trends in AlabamaNotable 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 →

Purple Gallinule has fallen sharply in Alabama: down 73% on the route-weighted index since 1975.

Purple Gallinule Survey Routes in Alabama

Routes recording Purple Gallinule in Alabama.
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 →
Fairview219971991
Madrid120042000
Dauphin Is119881966
Alabama Pt119911972
Dauphin Is 2120002000
Chacaloochee Bay120192019

Purple Gallinule Population Trend in Other States

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