Why is a mockingbird attacking people walking down the sidewalk? What can I do about it?
Mockingbirds are notorious for making nests in bushes or small trees near sidewalks, then dive-bombing pedestrians thinking they are in their territory and a threat to their nest. If this is happening for the first time, and a nest has already been made, you may have to avoid the area until the young have left the nest.
Eggs hatch in two weeks, and young leave the nest two more weeks after that. Mockingbirds don't usually re-use their nests, but may return the following year to the same shrub or tree. If you notice the bird return the following year, you can try to discourage it from nesting with wind chimes, hanging metal strips, or repeated squirting with a 'super-soaker' squirt gun. This can also help discourage a loud mockingbird from singing outside your window during the night.