Species · Delaware · BBS 2025 Release · 1966–2024
Ring-necked Pheasant Population Trend in Delaware
Ring-necked Pheasant in Delaware has fallen sharply: down 64% on the route-weighted index since 1968.
-64%Since 1968
10Routes In State
40Years
Notable Ring-necked Pheasant Trends in Delaware
long arc declinecomputed index
Ring-necked Pheasant has fallen sharply in Delaware: down 64% on the route-weighted index since 1968.
Ring-necked Pheasant Population Forecast in Delaware
If the recent trend holds, Ring-necked Pheasant in Delaware is projected to fall about 30% by 2014 — from 0.25 in 2009 to a central estimate of 0.17 (95% range 0.00–0.72). A 5-year backtest shows a typical error of ±71.5%, with 100% of held-out values landing inside the 95% band.
-30%Change by 2014
0.17Projected 2014 index
0.00–0.7295% range
±71.5%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2010 | 0.21 | 0.00 | 0.76 |
| 2011 | 0.20 | 0.00 | 0.75 |
| 2012 | 0.19 | 0.00 | 0.74 |
| 2013 | 0.18 | 0.00 | 0.73 |
| 2014 | 0.17 | 0.00 | 0.72 |
Ring-necked Pheasant Survey Routes in Delaware
| Blackbird | 2 | 2009 | 1994 |
| Mt Pleasant | 1 | 1999 | 1966 |
| Wilmington | 1 | 1987 | 1966 |
| Harrington | 1 | 2001 | 1975 |
| Frederica | 1 | 1992 | 1967 |
| Dover | 1 | 1979 | 1966 |
| Frankford | 1 | 1991 | 1991 |
| Holleyville | 1 | 1989 | 1985 |
| Bethany Bch | 1 | 1987 | 1985 |
| Milton | 1 | 1975 | 1975 |
Ring-necked Pheasant Population Trend in Other States
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Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.