| Answer | Crossword Clue |
|---|---|
| SKIRR | Sound of birds in flight. |
| SKIR | Sound, as of birds in flight: Var. |
| MIGRATION | Birds' semiannual flight |
| WHIR | Sound of flight. |
| TWEE | Sound of small birds. |
| TWEET | Bird's sound |
| TRILL | Bird's sound |
| CHEEP | Baby bird's sound |
| PEEP | Baby bird's sound |
| TWEE | Bird's piping sound. |
| PEEP | Little bird's sound |
| TWEE | Small bird's sound |
| TWEET | Little bird's sound |
| TRILLOFVICTORY | Winning bird's sound? |
| ERNS | Birds that sound deserving |
| COO | Lover's or bird's sound |
| LOONS | These birds sound batty |
| LOONS | Birds that sound batty |
| ERNS | Birds that sound deserving? |
