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Species · South Carolina · BBS 2026 Release · 1966–2025

Glossy Ibis Population Trend in South Carolina

All statesWetland birds

Glossy Ibis in South Carolina has held roughly steady: down 1% on the route-weighted index since 1973.

-1%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 →
3Routes 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 Glossy Ibis Trends in South 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 Glossy Ibis in South Carolina. See the full index history below.

Glossy Ibis Survey Routes in South Carolina

Routes recording Glossy Ibis in South 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 →
Owings819971997
Johns Isle119781966
Kiawah Island120252007

Glossy Ibis Population Trend in Other States

alabamaconnecticutdelawarefloridageorgialouisianamainemarylandmassachusettsnew-hampshirenew-jerseynew-yorknorth-carolinarhode-islandsouth-dakotatexasvirginia

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14.