16.But there's one type of situation that does seem to frighten the urban blackbirds, and that's anything new -- anything they haven't experienced before.
17.Researchers have shown that urban and rural blackbirds already differ from one another in their songs, the timing of reproduction and their risk of diseases.
19.JOHN MEGAHAN: And you have birds: geese, swans and ducks, swallows, warblers, finches, sparrows, blackbirds and crows, birds of paradise, other birds.