Because birds have wings, we associate great things with them. We see them high in the sky and think that one day we would like to be up there too, or at least high on the scale of life. Because birds represent all of the different directions in life that we hope to go to, it is understandable that bird poop represents a certain taunting of that goal. When you really want to get to a certain area in life, it can often seem as if it is taunting you. You keep getting closer, but are never quite able to grasp it. In other words, dreaming of bird poop suggests that you feel you are just out of reach of some of the opportunities that will eventually lead you to where you ultimately want to go in life.
Sometimes to dream of bird poop suggests all of the trials and tribulations you will have to go through in order to achieve your goals. You are trying to reach all of these complex and large goals, but you are unable to because of certain things that keep cropping up and getting in your way. A good example of this might be a promotion you are trying to achieve by impressing your boss and working hard hours. However, you have family obligations that prevent you from being able to do all of the work necessary to achieve your promotion. In this case all of those other responsibilities that you have preventing you from achieving your goals are represented by the bird poop. Do you have a lot of different responsibilities that keep you from achieving your goals? Then this may be why you are dreaming of bird poop.
Another reason you could possibly be dreaming of bird poop is because you feel as if small annoyances in your life are taking away from you overall enjoyment of other things in life. There is nothing more annoying than birds pooping right on your windshield when you are driving down the road. And even though it does not stop you from being able to drive, it is still very annoying. And you may find it hard to really get the bird poop off of your mind until you get it cleaned. You are in the middle of striving for a larger goal but small annoyances keep cropping up and stopping you from being able to enjoy what you are doing. This is a very possible interpretation of bird poop as a dream symbol. A final reason that people dream of bird poop may have something to do with the whiteness of the poop. It symbolizes all of the bad that is contained within the good in your life. With all good there is a little bit of bad to go along with it.