Traffic noise turns birds into sopranos
An ABC news story about the bird song research.

Notice that when you're is short for you are it is spelled with an apostrophe. Follow the link to find out more.

There are two ways to pronounce this word - follow the link and listen to them.

When too means 'as well' , it's spelled with two o's. Follow the link for more.

Here found is the past participle of the irregular verb find. Follow the link below to find out more and to listen to some examples.

Taken is the past participle of the irregular verb take. Follow the link below to find out more and to listen to some examples.