| Parent | Category | Figures | |
|---|---|---|---|
| 1 | Anas | platyrhynchos | 44189 |
| 2 | Anas | crecca | 7342 |
| 3 | Anas | acuta | 6046 |
| 4 | Anas | rubripes | 2616 |
| 5 | Anas | superciliosa | 2097 |
| 6 | Anas | fulvigula | 1648 |
| 7 | Anas | x | 980 |
| 8 | Anas | castanea | 744 |
| 9 | Anas | gracilis | 729 |
| 10 | Anas | bahamensis | 494 |
| 11 | Anas | poecilorhyncha | 387 |
| 12 | Anas | zonorhyncha | 345 |
| 13 | Anas | flavirostris | 299 |
| 14 | Anas | georgica | 270 |
| 15 | Anas | undulata | 253 |
| 16 | Anas | erythrorhyncha | 163 |
| 17 | Anas | capensis | 127 |
| 18 | Anas | chlorotis | 124 |
| 19 | Anas | sparsa | 86 |
| 20 | Anas | wyvilliana | 65 |
| 21 | Anas | andium | 51 |
| 22 | Anas | gibberifrons | 31 |
| 23 | Anas | aucklandica | 23 |
| 24 | Anas | melleri | 14 |
| 25 | Anas | luzonica | 12 |
| 26 | Anas | bernieri | 8 |
| 27 | Anas | nesiotis | 7 |
| 28 | Anas | laysanensis | 6 |
| 29 | Anas | formosa | 4 |
| 30 | Anas | aucklandia | 4 |
| 31 | Anas | albogularis | 2 |
| 32 | Anas | quequerdula | 1 |
| 33 | Anas | playtyrhynchos | 1 |