Species · Delaware · BBS 2025 Release · 1966–2024
Western Cattle-Egret Population Trend in Delaware
Western Cattle-Egret in Delaware has declined: down 46% on the route-weighted index since 1968.
-46%Since 1968
12Routes In State
45Years
Notable Western Cattle-Egret Trends in Delaware
No notable trend signals for Western Cattle-Egret in Delaware. See the full index history below.
Western Cattle-Egret Population Forecast in Delaware
If the recent trend holds, Western Cattle-Egret in Delaware is projected to stay roughly flat through 2020, near 0.53 (95% range 0.00–5.0). A 5-year backtest shows a typical error of ±170.1%, with 100% of held-out values landing inside the 95% band.
+5%Change by 2020
0.53Projected 2020 index
0.00–5.095% range
±170.1%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2016 | 0.80 | 0.00 | 5.2 |
| 2017 | 0.73 | 0.00 | 5.2 |
| 2018 | 0.66 | 0.00 | 5.1 |
| 2019 | 0.59 | 0.00 | 5.0 |
| 2020 | 0.53 | 0.00 | 5.0 |
Western Cattle-Egret Survey Routes in Delaware
| Lowes Xrds | 10 | 1986 | 1975 |
| Holleyville | 5 | 1983 | 1972 |
| Wilmington | 4 | 2013 | 1966 |
| Bethany Bch | 4 | 1978 | 1971 |
| Mt Pleasant | 3 | 2015 | 1968 |
| Dover | 3 | 1987 | 1974 |
| Harrington | 1 | 2001 | 1966 |
| Frederica | 1 | 1992 | 1979 |
| Frankford | 1 | 1995 | 1975 |
| Milton | 1 | 1974 | 1967 |
| Blackbird | 1 | 2002 | 1995 |
| Pepperbox | 1 | 2002 | 1999 |
Western Cattle-Egret Population Trend in Other States
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Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.