What does the colloquialism "bird on a wire" mean?
I'm really only guessing, but maybe a bird on a wire has a good view of a situation.
That's a movie with Mel Gibson and Goldie Hawn Emotion: smile
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I think it has something do to with a relationships. Implies that you are as close as birds on a wire.
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It's from a song by Leonard Cohen --

"Like a bird on a wire

like a drunk in a midnight choir

I have tried, in my way, to be free."

It's not an expression that people commonly use -- at least I've never heard it, except in the song or referring to an actual bird on an actual wire.