I think little bird his his like pet name for a girl, so he turns it into a metaphor for their relationship. And in the song he is talking to the girl and telling the story of how they had been in a relationship and it hasn't worked out. In the bridge it sounds like they had gotten into a fight (and you made me scream) he left her (and I made you cry when I left that little bird with it's broken leg to die). Some time has passed and they are both friends and they both kind of want to get back together possibly as shown when she is inviting him in to nurse this bird (fix the relationship) and when he talks to her in the chorus about her trusting that he wants to get back together. But also that they have to be careful because diving in (starting the relationship) too soon can lead to regret (a break up)
I think little bird his his like pet name for a girl, so he turns it into a metaphor for their relationship. And in the song he is talking to the girl and telling the story of how they had been in a relationship and it hasn't worked out. In the bridge it sounds like they had gotten into a fight (and you made me scream) he left her (and I made you cry when I left that little bird with it's broken leg to die). Some time has passed and they are both friends and they both kind of want to get back together possibly as shown when she is inviting him in to nurse this bird (fix the relationship) and when he talks to her in the chorus about her trusting that he wants to get back together. But also that they have to be careful because diving in (starting the relationship) too soon can lead to regret (a break up)