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

Tricolored Heron Population Trend in New Jersey

All statesWetland birds

Tricolored Heron in New Jersey has fallen sharply: down 57% on the route-weighted index since 1984.

-57%Since 1984TrendPercent 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 →
4Routes 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 Tricolored Heron Trends in New JerseyNotable 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 →

Tricolored Heron has fallen sharply in New Jersey: down 57% on the route-weighted index since 1984.

Tricolored Heron Survey Routes in New Jersey

Routes recording Tricolored Heron in New Jersey.
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 →
Villas219811981
Cape May Ch120112005
Six Points120142002
Ocean City120241979

Tricolored Heron Population Trend in Other States

alabamaarkansasdelawarefloridageorgiakansaslouisianamarylandmississippinorth-carolinasouth-carolinatexasvirginia

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