Rescuing a bird stands for compassion and the urge to protect what is vulnerable. Dream books read it as caring for a fragile part of yourself or someone close.
Where in your waking life have you met something like this lately?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.