| Name | Children | Media (from resource) | Traits |
|---|---|---|---|
| Alcedininae | 0 | 2 | 0 |
| Alcedo Linnaeus 1758 | 1 | 2 | 0 |
| Alcedo atthis (Linnaeus 1758) (Common Kingfisher) | 0 | 2 | 0 |
| Alcelaphinae | 1 | 2 | 0 |
| Alces Gray 1821 | 1 | 0 | 0 |
| Alces alces (Linnaeus 1758) (North American Elk) | 0 | 2 | 0 |
| Alchemilla (lady's mantle) | 0 | 2 | 0 |
| Alcidae (auks) | 5 | 2 | 0 |
| Aleochara | 0 | 2 | 0 |
| Aleocharina | 1 | 0 | 0 |
| Aleocharinae | 1 | 0 | 0 |
| Aleocharini | 1 | 0 | 0 |
| Alethinophidia | 4 | 2 | 0 |
| Aleyrodidae (whiteflies) | 0 | 2 | 0 |
| Alismatidae | 1 | 0 | 0 |
