Related Clues:

• Nerves may cause them
• Personality quirks
• Cut tail off bird
• Convulsive movements
• Fits well with text
• Cramps, e.g
• Fits and starts?
• Physical jerks
• Spring's madness ends in bursts
• Son blocks unwanted email then second starts
• 'Sun' involved in junk communication before news, finally, in brief spurts
• Jerks mistake pass for first mountains on last tours
• Wells starts writing in sudden bursts of activity
• Random muscle movements
• Convulsions