Species · South Carolina · BBS 2025 Release · 1966–2024
Double-crested Cormorant Population Trend in South Carolina
Double-crested Cormorant in South Carolina has risen sharply: up 50% on the route-weighted index since 1995.
+50%Since 1995
11Routes In State
16Years
Notable Double-crested Cormorant Trends in South Carolina
long arc increasecomputed index
Double-crested Cormorant has risen sharply in South Carolina: up 50% on the route-weighted index since 1995.
Double-crested Cormorant Survey Routes in South Carolina
| Adams Run | 15 | 1999 | 1999 |
| Jamestown | 3 | 1993 | 1993 |
| New Holland | 3 | 2023 | 2023 |
| Dillon | 3 | 1992 | 1992 |
| Hardeeville | 2 | 1999 | 1999 |
| Foreston | 2 | 2009 | 2009 |
| Holly Hill | 1 | 2016 | 2016 |
| Wagener | 1 | 1995 | 1995 |
| Kiawah Island | 1 | 2021 | 1998 |
| Plum Branch | 1 | 2000 | 2000 |
| Red Bluff | 1 | 1998 | 1998 |
Double-crested Cormorant Population Trend in Other States
alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.