| Rating | Solver | Clue |
|---|---|---|
| TRILLING | Warbling | |
| YODELS | Alpine warbling | |
| YODELLING | Warbling alpine-style | |
| YODELING | Warbling alpine style | |
| THRILL | A warbling; a trill. | |
| WARBLINGLY | In a warbling manner. | |
| RAMAGE | Warbling of birds in trees. | |
| BUBBLE | To sing with a gurgling or warbling sound. | |
| WARBLE | To sing in a trilling, quavering, or vibratory manner; to modulate with turns or variations; to trill; as, certain birds are remarkable for warbling their songs. | |
| GREENLET | ...can singing birds, of the genus Vireo, as the solitary, or blue-headed (Vireo solitarius); the brotherly-love (V. Philadelphicus); the warbli... | |