BirdAnalyst
Species · New Jersey · BBS 2026 Release · 1966–2025

Fish Crow Population Trend in New Jersey

All statesGeneralists

Fish Crow in New Jersey has surged: up 284% on the route-weighted index since 1968.

+284%Since 1968TrendPercent 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 →
39Routes 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 →
59YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Fish Crow 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 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 →

Fish Crow has surged in New Jersey: up 284% on the route-weighted index since 1968.

Fish Crow Population Forecast in New Jersey

If the recent trend holds, Fish Crow in New Jersey is projected to rise about 15% by 2030 — from 5.3 in 2025 to a central estimate of 6.2 (95% range 2.5–9.8). A 5-year backtest shows a typical error of ±16.2%, with 100% of held-out values landing inside the 95% band.

+15%Change by 2030TrendPercent 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 →
6.2Projected 2030 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
2.5–9.895% range95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
±16.2%Backtest errorBacktest errorTypical error when we hold out the most recent years, forecast them, and compare to what actually happened. Lower means a more trustworthy projection.Full methodology →
If the recent trend holds, Fish Crow in New Jersey is projected to rise about 15% by 2030 — from 5.3 in 2025 to a central estimate of 6.2 (95% range 2.5–9.8). A 5-year backtest shows a typical error of ±16.2%, with 100% of held-out values landing inside the 95% band.19662030
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →95% low95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →95% high95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
20265.92.39.5
20276.02.39.6
20286.02.49.6
20296.12.59.7
20306.22.59.8

Fish Crow Survey Routes in New Jersey

Routes recording Fish Crow 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 →
Bennett Mill 23520252016
Villas2419801979
Cranbury1720251989
Ocean City1620251979
Keyport1320221992
Bennett Mill1120001966
Albion1020221966
Cape May Ch920131992
Woodbury Hgt820251968
Toms River820241966
Dover820231987
Deepwater719771970
Roosevelt720221990
Spraguetown719901977
Pedricktown 2720252015
Winslow720241989
Six Points620241978
Ancora619771966
Holmansville620091969
Gillette620252015
Spraguetown 3620242023
Estell Manor520222021
Pedricktown420101996
Del Haven319911991
New Bedford320241975

Fish Crow Population Trend in Other States

alabamaarkansasconnecticutdelawarefloridageorgiaillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmississippimissourinew-hampshirenew-yorknorth-carolinaohiooklahomapennsylvaniarhode-islandsouth-carolinatennesseetexasvermontvirginiawest-virginia

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