| Referens | Campbell, R.W., R.B. Bovey and A. Bezener, 2001 Birds of Vancouver and the lower mainland. Canada: Lone Pine Publishing, 160 p. |
| Ref. | 94965 Campbell, R.W., R.B. Bovey and A. Bezener, 2001 |
| Sida | 79 |
| Named Used as Valid | Sterna hirundo |
| Observationsplats | |
| Distribution | Canada. |