| Answer | Crossword Clue |
|---|---|
| passerines | PASSERINE, a perching bird |
| passerines | A passerine bird; a perching bird |
| songbird | A perching bird of an advanced group distinguished by having the muscles of the syrinx attached to the bronchial semirings; an oscine passerine |
| songbirds | A perching bird of an advanced group distinguished by having the muscles of the syrinx attached to the bronchial semirings; an oscine passerine |
| passerine | a perching bird |
| percher | bird whose feet are adapted for perching |
