Species · Delaware · BBS 2025 Release · 1966–2024
American Redstart Population Trend in Delaware
American Redstart in Delaware has fallen sharply: down 57% on the route-weighted index since 1969.
-57%Since 1969
9Routes In State
20Years
Notable American Redstart Trends in Delaware
long arc declinecomputed index
American Redstart has fallen sharply in Delaware: down 57% on the route-weighted index since 1969.
American Redstart Population Forecast in Delaware
If the recent trend holds, American Redstart in Delaware is projected to fall about 54% by 2014 — from 0.25 in 2009 to a central estimate of 0.12 (95% range 0.00–0.36). A 5-year backtest shows a typical error of ±83.8%, with 60% of held-out values landing inside the 95% band.
-54%Change by 2014
0.12Projected 2014 index
0.00–0.3695% range
±83.8%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2010 | 0.13 | 0.00 | 0.37 |
| 2011 | 0.13 | 0.00 | 0.37 |
| 2012 | 0.12 | 0.00 | 0.37 |
| 2013 | 0.12 | 0.00 | 0.36 |
| 2014 | 0.12 | 0.00 | 0.36 |
American Redstart Survey Routes in Delaware
| Blackbird | 2 | 2001 | 2001 |
| Mt Pleasant | 1 | 1971 | 1968 |
| Wilmington | 1 | 1985 | 1985 |
| Harrington | 1 | 2009 | 1968 |
| Frederica | 1 | 1975 | 1966 |
| Frankford | 1 | 1978 | 1978 |
| Holleyville | 1 | 1976 | 1971 |
| Lowes Xrds | 1 | 1977 | 1975 |
| Milton | 1 | 2009 | 2009 |
American Redstart Population Trend in Other States
alabamaalaskaarkansascoloradoconnecticutgeorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanew-hampshirenew-jerseynew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasvermontvirginiawashingtonwest-virginiawisconsinwyoming
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.