Lyric discussion by Zastrozzi 

Cover art for Talking Bird lyrics by Death Cab for Cutie

I know this song is heavily commented already. I didn't go through them all, but with a cursory check, I think I can add something I haven't seen. I think this is a song about having a relationship with a narcissist.

The metaphor, relating someone to a talking bird, is inherently biting and a bit condescending. This relationship didn't work out well.

The song is written from the perspective of still being in the relationship, how the artist felt at the time with a person. The individual he's having a relationship with sounds like a narcissist, consumed with themselves and their lives. But he can overlook this. He's happy in their situation, and willing to tolerate it.

But narcissists are never happy for long. And in their unhappiness they sabotage their relationships and create chaos. One way they might do this is by accusing the person who is happy of making them feel trapped because they want out.

The protagonist is content in the relationship. He recognizes his lover's flaws but can overlook them. Yet they sing their plaintiff refrain ad nauseam. Again, written in retrospect, I think, because the metaphor itself is a bit mean.

The artist believes this person messed up a good thing for no good reason.