Species · New Jersey · BBS 2025 Release · 1966–2024
Glossy Ibis Population Trend in New Jersey
Glossy Ibis in New Jersey has surged: up 749% on the route-weighted index since 1971.
+749%Since 1971
11Routes In State
43Years
Notable Glossy Ibis Trends in New Jersey
long arc increasecomputed index
Glossy Ibis has surged in New Jersey: up 749% on the route-weighted index since 1971.
Glossy Ibis Population Forecast in New Jersey
If the recent trend holds, Glossy Ibis in New Jersey is projected to fall about 100% by 2027 — from 0.12 in 2022 to a central estimate of 0.00 (95% range 0.00–8.4). A 5-year backtest shows a typical error of ±499.1%, with 100% of held-out values landing inside the 95% band.
-100%Change by 2027
0.00Projected 2027 index
0.00–8.495% range
±499.1%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2023 | 0.00 | 0.00 | 8.4 |
| 2024 | 0.00 | 0.00 | 8.4 |
| 2025 | 0.00 | 0.00 | 8.4 |
| 2026 | 0.00 | 0.00 | 8.4 |
| 2027 | 0.00 | 0.00 | 8.4 |
Glossy Ibis Survey Routes in New Jersey
| Villas | 41 | 1981 | 1979 |
| Del Haven | 17 | 1991 | 1991 |
| Spraguetown | 3 | 1991 | 1991 |
| Six Points | 3 | 2015 | 1980 |
| Cape May Ch | 3 | 2013 | 1992 |
| Ocean City | 3 | 2022 | 1979 |
| Pomona | 2 | 1980 | 1980 |
| Greenwich | 1 | 2005 | 1969 |
| Deepwater | 1 | 1971 | 1970 |
| Toms River | 1 | 1997 | 1997 |
| Spraguetown 2 | 1 | 2001 | 2001 |
Glossy Ibis Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.