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

Ruby-throated Hummingbird Population Trend in New Jersey

All statesGeneralists

Ruby-throated Hummingbird in New Jersey has surged: up 330% on the route-weighted index since 1970.

+330%Since 1970
31Routes In State
48Years

Notable Ruby-throated Hummingbird Trends in New Jersey

long arc increasecomputed index

Ruby-throated Hummingbird has surged in New Jersey: up 329% on the route-weighted index since 1970.

Ruby-throated Hummingbird Population Forecast in New Jersey

If the recent trend holds, Ruby-throated Hummingbird in New Jersey is projected to fall about 32% by 2029 — from 0.62 in 2024 to a central estimate of 0.42 (95% range 0.19–0.66). A 5-year backtest shows a typical error of ±24.1%, with 80% of held-out values landing inside the 95% band.

-32%Change by 2029
0.42Projected 2029 index
0.19–0.6695% range
±24.1%Backtest error
19682029
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected index95% low95% high
20250.400.160.63
20260.410.170.64
20270.410.180.65
20280.420.180.65
20290.420.190.66

Ruby-throated Hummingbird Survey Routes in New Jersey

Routes recording Ruby-throated Hummingbird in New Jersey.
Del Haven319911991
Pomona320241990
Cape May Ch320111993
Winslow320241990
Woodbury Hgt220241986
Greenwich220181968
Midvale220161974
Kemah Lake220231984
High Point220241991
Six Points120241979
Spraguetown 2120032003
Albion120221968
Sandbrook120041970
Holmansville120041969
New Bedford120161976
Croton119891980
Hope119941977
Bloomsbury119921978
Dover120192007
Pottersville120111989
Gillette120151990
Keyport120221993
Cranbury119871987
Roosevelt120142014
Friendship120241991

Ruby-throated Hummingbird Population Trend in Other States

alabamaarkansasconnecticutdelawarefloridageorgiaillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourinebraskanew-hampshirenew-yorknorth-carolinanorth-dakotaohiooklahomapennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasvermontvirginiawest-virginiawisconsin

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