Do you remember what it was about? Essentially it is a movie about a man that goes to visit his mother to tell her that he is getting married. The mother becomes jealous and then for seemingly no reason birds begin to attack the town. Hitchcock scholars suggest that the true meaning behind the film was that the birds stood as a metaphor for the strangely incestuous relationship between the main character and his mother, and all of the jealousy that she felt when she heard that her son was getting married and there would be someone else to take care of him.
With all of this information floating through your mind it must be hard to imagine what the birds attacking was supposed to mean in your dream. If you were one of the chosen few that happened to pick up easily on what the meaning of the film was then you should count yourself lucky for one, and also realize that when you dream about birds attacking you, it could relate to feelings of jealousy that you have towards someone else. This interpretation becomes even more likely if the birds are attacking everyone except you in the dream. That would mean that you are the only one that is being spared and thus, the birds are a reflection of your emotions and nobody else’s.
If this is not the case or you were not one of the people to pick up on the meaning of the birds, or have never even seen the birds, then your dream of birds attacking probably has more to do with your perception of your future goals. You are beginning to have doubts about your plans for the future. Because birds are a reflection of all of the aspirations that you have towards the future, if the birds are attacking you then it means that your aspirations might not be as desirable as you thought.
Another interpretation using that understanding which operates along the same lines is the idea that the birds may represent your goals, but your pursuit of those goals is causing you lots of stress and misfortune in the process. You are working hard to reach all of your desires but things keep springing up in your way and stopping you from being able to achieve your pursuits. These could be little annoyances that keep you from reaching your goals, or they could be major problems that prevent you from being able to realize your aspirations. But no matter the magnitude of the situation that these birds represent, you are being held back in some way, and need to buckle down and stand strong if you hope to really get where you want to go in life.