Hi Anjel37. As you know, dream images rarely stand alone as their meanings vary depending on the context within the whole dream. Everything in the dream provides a clue, from the time of day to the feelings you felt during the dream.
However, just as a singular symbol, a dove generally is a positive sign. A dove is a gentle bird. It typically represents "peace" and it is a bringer of an important message. This message is one of peace, harmony, and hope.
Interesting that this bird is in a tree rather than flying. This, to me, indicates that this message is to be found in a family. If not a blood relative-type or ancestral family, it can be a spiritual family.
Who is this dream dove? Is it you who will bring a peace to your family? Someone will.
And as with all messages, it is up to the receiver to receive the message. So be open to a message of hope and peace.