Species · Minnesota · BBS 2025 Release · 1966–2024
Caspian Tern Population Trend in Minnesota
Caspian Tern in Minnesota has held roughly steady: down 9% on the route-weighted index since 1985.
-9%Since 1985
14Routes In State
13Years
Notable Caspian Tern Trends in Minnesota
No notable trend signals for Caspian Tern in Minnesota. See the full index history below.
Caspian Tern Survey Routes in Minnesota
| Pine River | 7 | 1986 | 1986 |
| Backus | 6 | 1992 | 1989 |
| Hartland | 3 | 1990 | 1990 |
| Edwards | 3 | 1987 | 1983 |
| Big Stone | 2 | 1997 | 1997 |
| Le Center | 2 | 2011 | 2011 |
| Minnetonka | 1 | 1996 | 1992 |
| Nebish | 1 | 1989 | 1989 |
| Princeton | 1 | 2001 | 2001 |
| Osseo | 1 | 1992 | 1992 |
| Knapp | 1 | 1992 | 1992 |
| St Stephen | 1 | 1993 | 1993 |
| Mille Lacs | 1 | 1979 | 1979 |
| Evergreen | 1 | 1990 | 1985 |
Caspian Tern Population Trend in Other States
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.