Read the text. Seven sentences have been removed from the article. Choose from the sentences \(A\-H\) the one which fits each gap \(1\-7\). There is one extra sentence.

But how does a bird produce such a large range of sounds? Well, for a start, birds have no vocal chords, so they are physically unable to `talk.` 6 ... With a larger voice box, a bird can produce a wider range of sounds, such as in the case of parrots like Bibi.