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Species · Kansas · BBS 2025 Release · 1966–2024

Yellow-crowned Night Heron Population Trend in Kansas

All statesWetland birds

Yellow-crowned Night Heron in Kansas has declined: down 46% on the route-weighted index since 1973.

-46%Since 1973TrendPercent 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 →
8Routes 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 Yellow-crowned Night Heron Trends in KansasNotable 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 Yellow-crowned Night Heron in Kansas. See the full index history below.

Yellow-crowned Night Heron Survey Routes in Kansas

Routes recording Yellow-crowned Night Heron in Kansas.
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 →
Hays419691969
Missler219961996
Trading Post220122012
Lapland119881983
St John119751975
Albert120191972
Gray119751974
Seneca120122012

Yellow-crowned Night Heron Population Trend in Other States

alabamaarkansasconnecticutdelawarefloridageorgiaillinoisindianakentuckylouisianamarylandmississippimissourinew-jerseynew-yorknorth-carolinaohiooklahomapennsylvaniasouth-carolinatennesseetexasvirginiawest-virginia

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