The sparrow is very vulnerable bird, therefore its meaning could indicate your personality. Perhaps you are very shy person. Sometimes sparrow in the dreams shows that you are very acting and chatty person. Many sparrows could show that you are surrounded by many very active friends. Sometimes the features of the sparrow should be applied to people in your waking life, so its not necessarily the dream about you.
Read more about dreaming of Sparrow in other dream meanings interpretations.