Related:

• If brains were bird droppings, he'd have a clean cage.
• A secret in his mouth, Is like a wild bird put into a cage
  Whose door no sooner opens, but 'tis out. -- Johnso...
• Republicans study the financial pages of the newspaper.
  Democrats put them in the bottom of the bird cage....
• The Bird of Time has but a little way to fly ... and the bird is on the wing. -- Omar Khayyam
• Logic is a little bird, sitting in a tree, that smells AWFUL.
• The little bird is now dead. Its body disappears.
• Logic is a little bird, sitting in a tree; that smells *_____awful*.