| Answer | Crossword Clue |
|---|---|
| AVES | Birds, as a class |
| odontornithes | fossil birds with teeth (not a natural class) |
| aves | (used with a pl. v.) class of vertebrates comprising the birds |
| AVES | Birds' class |
| AVES | Birds' biological class |
| AVES | Class of birds |
| AVES | Class for the birds |
| AVES | Class comprising the birds |
| AVES | Class of verebrates, the birds. |
| AVES | Class that's for the birds |
| SEXED | Birds-and-the-bees class |
| SEXED | Class about the birds and the bees |
| SEXED | Class that teaches about the birds and the bees |
