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

Fish Crow Population Trend in New Jersey

All statesGeneralists

Fish Crow in New Jersey has surged: up 327% on the route-weighted index since 1968.

+327%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 →
58YearsYears 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 327% 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 stay roughly flat through 2029, near 6.1 (95% range 2.5–9.8). A 5-year backtest shows a typical error of ±22.6%, with 100% of held-out values landing inside the 95% band.

+10%Change by 2029TrendPercent 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 →
6.1Projected 2029 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 →
±22.6%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 stay roughly flat through 2029, near 6.1 (95% range 2.5–9.8). A 5-year backtest shows a typical error of ±22.6%, with 100% of held-out values landing inside the 95% band.19662029
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 →
20255.92.29.5
20265.92.39.6
20276.02.39.6
20286.12.49.7
20296.12.59.8

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 →
Villas2419801979
Ocean City2320241979
Woodbury Hgt1420241968
Keyport1320221992
Bennett Mill1120001966
Albion1020221966
Cranbury1020241989
Pedricktown 21020242015
Cape May Ch920131992
Toms River820241966
Dover820231987
Deepwater719771970
Roosevelt720221990
Spraguetown719901977
Winslow720241989
Six Points620241978
Ancora619771966
Holmansville620091969
Spraguetown 3620242023
Sandbrook520241970
Estell Manor520222021
Bennett Mill 2520242016
Gillette420242015
Pedricktown420101996
Greenwich320241966

Fish Crow Population Trend in Other States

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

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