Birds circling overhead are read as thoughts returning again and again, or as watching and waiting. Their mood in the dream decides whether this feels like watchfulness or worry.
Has this come up in your dreams before? What was going on in your life then?
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.