Species · Rhode Island · BBS 2025 Release · 1966–2024
Northern Bobwhite Population Trend in Rhode Island
Northern Bobwhite in Rhode Island has collapsed: down 83% on the route-weighted index since 1968.
-83%Since 1968
4Routes In State
21Years
Notable Northern Bobwhite Trends in Rhode Island
long arc declinecomputed index
Northern Bobwhite has collapsed in Rhode Island: down 83% on the route-weighted index since 1968.
Northern Bobwhite Population Forecast in Rhode Island
If the recent trend holds, Northern Bobwhite in Rhode Island is projected to fall about 78% by 1999 — from 1.0 in 1994 to a central estimate of 0.22 (95% range 0.00–4.2). A 5-year backtest shows a typical error of ±832.6%, with 100% of held-out values landing inside the 95% band.
-78%Change by 1999
0.22Projected 1999 index
0.00–4.295% range
±832.6%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 1995 | 0.69 | 0.00 | 4.7 |
| 1996 | 0.57 | 0.00 | 4.5 |
| 1997 | 0.46 | 0.00 | 4.4 |
| 1998 | 0.34 | 0.00 | 4.3 |
| 1999 | 0.22 | 0.00 | 4.2 |
Northern Bobwhite Survey Routes in Rhode Island
| Quonset Pt | 2 | 1983 | 1966 |
| Sachuest Pt | 1 | 1978 | 1978 |
| Shannock | 1 | 1991 | 1973 |
| Wallum Lake | 1 | 1994 | 1975 |
Northern Bobwhite Population Trend in Other States
alabamaarkansascoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourinebraskanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinaohiooklahomaoregonpennsylvaniasouth-carolinasouth-dakotatennesseetexasvermontvirginiawashingtonwest-virginiawisconsinwyoming
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.