Species · South Carolina · BBS 2025 Release · 1966–2024
Least Tern Population Trend in South Carolina
Least Tern in South Carolina has edged down: down 22% on the route-weighted index since 1999.
-22%Since 1999
3Routes In State
12Years
Notable Least Tern Trends in South Carolina
No notable trend signals for Least Tern in South Carolina. See the full index history below.
Least Tern Survey Routes in South Carolina
| Johns Isle | 2 | 1974 | 1974 |
| Hardeeville | 2 | 2024 | 2019 |
| Kiawah Island | 1 | 2021 | 1998 |
Least Tern Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.