| Parent | Category | Figures | |
|---|---|---|---|
| 1 | Sterna | forsteri | 5192 |
| 2 | Sterna | hirundo | 4326 |
| 3 | Sterna | paradisaea | 1145 |
| 4 | Sterna | striata | 459 |
| 5 | Sterna | dougallii | 446 |
| 6 | Sterna | aurantia | 167 |
| 7 | Sterna | sumatrana | 149 |
| 8 | Sterna | hirundinacea | 79 |
| 9 | Sterna | albifrons | 59 |
| 10 | Sterna | trudeaui | 58 |
| 11 | Sterna | vittata | 53 |
| 12 | Sterna | acuticauda | 36 |
| 13 | Sterna | repressa | 33 |
| 14 | Sterna | sandvicensis | 29 |
| 15 | Sterna | sandvicencis | 5 |
| 16 | Sterna | x | 5 |
| 17 | Sterna | sansvicensis | 1 |