Related Clues:

• Reason for ringing
• Sound from the birdcage
• Canary call
• Trading option
• Parakeet sound
• Pay a visit
• Phone
• Nestling's noise
• Engage in telemarketing
• Ump's announcement
• An ump is paid to make it
• Keep in touch
• Safe or out
• Little bird's sound
• Hold 'em option