BirdAnalyst
Species · New York · BBS 2025 Release · 1966–2024

Glossy Ibis Population Trend in New York

All statesWetland birds

Glossy Ibis in New York has risen sharply: up 64% on the route-weighted index since 1986.

+64%Since 1986TrendPercent 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 →
13YearsYears 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 New YorkNotable 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 increasecomputed 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 →

Glossy Ibis has risen sharply in New York: up 64% on the route-weighted index since 1986.

Glossy Ibis Survey Routes in New York

Routes recording Glossy Ibis in New York.
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 →
Jones Beach420131971
Westhampton120211993
Hauppauge119901990

Glossy Ibis Population Trend in Other States

alabamaconnecticutdelawarefloridageorgialouisianamainemarylandmassachusettsnew-hampshirenew-jerseynorth-carolinarhode-islandsouth-carolinasouth-dakotatexasvirginia

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