Urban ecosystems represent complex arrangements that are dominated by human beings. As a result, current rates of rapid urbanization will impose wide selection pressure on any group of animals, especially birds. The present review summarized the latest studies on ways in which avian species in urban neighborhoods adapt to urbanization as manifested by their behavior, physiological indices, and the population genetic structure. Based on the quantitative effects of inheritance, we suggested that the adaptation of some bird species to urban environments has risen to levels of evolution. Furthermore, we discussed the possibility of the appearance of new urbanization-induced avian species. We also suggest new perspectives for research on the adaptation of birds to urbanization.