Species · North Carolina · BBS 2025 Release · 1966–2024
Black-billed Cuckoo Population Trend in North Carolina
Black-billed Cuckoo in North Carolina has collapsed: down 82% on the route-weighted index since 1972.
-82%Since 1972
12Routes In State
21Years
Notable Black-billed Cuckoo Trends in North Carolina
long arc declinecomputed index
Black-billed Cuckoo has collapsed in North Carolina: down 82% on the route-weighted index since 1972.
Black-billed Cuckoo Population Forecast in North Carolina
If the recent trend holds, Black-billed Cuckoo in North Carolina is projected to stay roughly flat through 2020, near 0.00 (95% range 0.00–0.07). A 5-year backtest shows a typical error of ±44.7%, with 100% of held-out values landing inside the 95% band.
n/aChange by 2020
0.00Projected 2020 index
0.00–0.0795% range
±44.7%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2016 | 0.01 | 0.00 | 0.07 |
| 2017 | 0.01 | 0.00 | 0.07 |
| 2018 | 0.00 | 0.00 | 0.07 |
| 2019 | 0.00 | 0.00 | 0.07 |
| 2020 | 0.00 | 0.00 | 0.07 |
Black-billed Cuckoo Survey Routes in North Carolina
| Milltail Cr | 6 | 1997 | 1997 |
| Todd | 1 | 2015 | 2015 |
| Sheep Ridge | 1 | 2014 | 2013 |
| Waterville | 1 | 2008 | 1998 |
| Busick | 1 | 1998 | 1994 |
| Table Rock | 1 | 1996 | 1995 |
| Pinelog | 1 | 2007 | 2007 |
| Oteen | 1 | 1988 | 1988 |
| Copeland | 1 | 1975 | 1970 |
| Marshall | 1 | 2004 | 1995 |
| Cullowhee | 1 | 1979 | 1978 |
| Linville | 1 | 2003 | 2003 |
Black-billed Cuckoo Population Trend in Other States
alabamaarkansascoloradoconnecticutdelawaregeorgiaidahoillinoisindianaiowakansaskentuckymainemarylandmassachusettsmichiganminnesotamissourimontananebraskanew-hampshirenew-jerseynew-yorknorth-dakotaohiooklahomapennsylvaniarhode-islandsouth-dakotatennesseetexasvermontvirginiawest-virginiawisconsinwyoming
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.