[header] How to clip a cockatiel's flier feathers [title] Find a partner to help you. [step] One person should hold your cockatiel firmly and put his middle and index fingers on the sides of the bird's neck to keep her from biting. [title] Towel your bird. 
[step] If you are having trouble controlling your bird, try covering your bird with a soft, clean towel. This may calm the bird and make him easier to handle.