Species · Virginia · BBS 2025 Release · 1966–2024
Black-billed Cuckoo Population Trend in Virginia
Black-billed Cuckoo in Virginia has collapsed: down 90% on the route-weighted index since 1968.
-90%Since 1968
42Routes In State
52Years
Notable Black-billed Cuckoo Trends in Virginia
long arc declinecomputed index
Black-billed Cuckoo has collapsed in Virginia: down 90% on the route-weighted index since 1968.
Black-billed Cuckoo Population Forecast in Virginia
If the recent trend holds, Black-billed Cuckoo in Virginia is projected to fall about 100% by 2029 — from 0.06 in 2024 to a central estimate of 0.00 (95% range 0.00–0.35). A 5-year backtest shows a typical error of ±196.9%, with 100% of held-out values landing inside the 95% band.
-100%Change by 2029
0.00Projected 2029 index
0.00–0.3595% range
±196.9%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.00 | 0.00 | 0.35 |
| 2026 | 0.00 | 0.00 | 0.35 |
| 2027 | 0.00 | 0.00 | 0.35 |
| 2028 | 0.00 | 0.00 | 0.35 |
| 2029 | 0.00 | 0.00 | 0.35 |
Black-billed Cuckoo Survey Routes in Virginia
| Stanley | 3 | 1993 | 1966 |
| Edinburg | 3 | 1992 | 1969 |
| Nat Tunnel | 3 | 1997 | 1992 |
| Carters Brdg | 3 | 1981 | 1969 |
| Taylorstown | 2 | 1985 | 1968 |
| W Augusta | 2 | 1999 | 1967 |
| Tryme | 2 | 2011 | 1975 |
| Shipman | 2 | 1995 | 1969 |
| White Stone | 2 | 1972 | 1970 |
| Front Royal | 2 | 2011 | 1995 |
| Star Tannery | 1 | 2005 | 1980 |
| Churchville | 1 | 2024 | 1970 |
| Rural Retrt | 1 | 2016 | 1990 |
| Gr North Mtn | 1 | 2024 | 1994 |
| Glenwood | 1 | 1998 | 1998 |
| David | 1 | 1990 | 1990 |
| Isom | 1 | 2011 | 1969 |
| Putnam | 1 | 1993 | 1971 |
| Covington | 1 | 2018 | 2011 |
| New Market | 1 | 2013 | 1995 |
| Fincastle | 1 | 1979 | 1966 |
| Natural Brid | 1 | 1980 | 1974 |
| Mountain Lk. | 1 | 2007 | 2007 |
| Big Island | 1 | 1970 | 1970 |
| Covesville | 1 | 1978 | 1978 |
Black-billed Cuckoo Population Trend in Other States
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Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.