| Answer | Crossword Clue |
|---|---|
| EMU | Bird with calf muscles |
| EMU | Only bird with calf muscles |
| SOLEI | Calf muscles |
| RODEO | What may involve the calf muscles? |
| songbirds | A perching bird of an advanced group distinguished by having the muscles of the syrinx attached to the bronchial semirings; an oscine passerine |
| songbird | A perching bird of an advanced group distinguished by having the muscles of the syrinx attached to the bronchial semirings; an oscine passerine |
