| Answer | Crossword Clue |
|---|---|
| CERE | Waxy covering at the base of a bird's beak |
| CERE | Waxy part at the base of a bird's bill |
| CERE | Area at base of bird's beak: Zool. |
| praecocial | of or relating to birds whose young are hatched with a covering of down and can leave the nest at once to seek food also PRECOCIAL |
| precocial | of or relating to birds whose young are hatched with a covering of down and can leave the nest at once to seek food / a bird having such young also PRAECOCIAL |
| uropygial | of or pertaining to the uropygium, or prominence at the base of the tail feathers, in birds |
