Related Clues:

• Bird's sound
• Trill
• Chirp
• Tweet
• Twitter
• Cheep
• Sound of a small bird
• Make series of notes like grasshopper
• Tweet: 'Filthy rich and right cheerful'
• Sound of small bird
• Bird's noise
• Birdsong
• Sound made by a bird
• Make high-pitched sounds
• Bird sound - and another made when capturing game?