| Answer | Crossword Clue |
|---|---|
| CERE | Waxy part at the base of a bird's bill |
| CERE | Waxy covering at the base of a bird's beak |
| gonys | the ridge along the tip of the lower mandible of a bird's bill at the junction of the two joined halves, esp. prominent in gulls |
| sheathbill | either of two Antarctic seabirds having a white plumage and a horny sheath at the base of the bill |
| sheathbills | SHEATHBILL, either of two Antarctic seabirds having a white plumage and a horny sheath at the base of the bill |
| whooper | common, Old World swan, Cygnus cygnus, distinguished by a yellow patch at the base of its bill, noted for its whooping cry |
