BirdAnalyst
Species · North Carolina · BBS 2025 Release · 1966–2024

King Rail Population Trend in North Carolina

All statesWetland birds

King Rail in North Carolina has fallen sharply: down 56% on the route-weighted index since 1996.

-56%Since 1996TrendPercent 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 →
5Routes 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 →
16YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable King Rail Trends in North CarolinaNotable 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 King Rail in North Carolina. See the full index history below.

King Rail Survey Routes in North Carolina

Routes recording King Rail in North Carolina.
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 →
Merrimon119801980
Supply120111994
Hertford119971997
Jarvisburg 2120172011
Old Trap120222016

King Rail Population Trend in Other States

alabamaarkansasconnecticutdelawarefloridageorgiakansaslouisianamarylandminnesotamississippinew-jerseyoklahomasouth-carolinatexasvirginiawest-virginiawisconsin

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