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• Members of an avian species of identical plumage congregate.
  [ birds of a feather flock together. ]...
• Fortune finishes the great quotations, #3 Birds of a feather flock to a newly washed car.
• Make like the birds and flock off
• Birds of a feather will gather together. -- Robert Burton (1577-1640) -- The Anatomy of Melancholy, Part iii, Sect.
  1, Memb. 1, Subsect. 2...
• Imagine if birds were tickled by feathers. You'd see a flock of birds come by, laughing hysterically!
• BOF: /B-O-F/ or /bof/ n. Abbreviation for the phrase "Birds Of a Feather" (flocking together), an informal discussion group and/or bull session scheduled on a conference program.
  It is not clear where or when this term originated, but it is now associated with the USENIX conferences for UNIX techies and was already established there by 1984....
• BOF /B-O-F/ or /bof/ n. 1. [common] Abbreviation for the phrase "Birds Of a Feather" (flocking together)
  an informal discussion group and/or bull session scheduled on a conference program....
• You know you've been hacking too long when... ...you see a flock of birds and try to figure out the algorithms that determine their movement.
• Tie two birds together and though they have four wings, they cannot fly.