Tell me How?

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i was wondering about a question which came to my mind after watching a soap opera on tv. i didn't find any answer to it.so that's why i am hitting upon the friends here.if anybody can help me solving it. the plot is there are 2 separate establishments in two isolated islands(in one a family lives and in other a bunch of tribes).there are no dirct connection between the people living there.as there are no phone connections, internet lines and even post office to join them.but still the breaking news of the family regulary reached the tribes. eHow???...only thing that comes to my mind are fishes & birds...but which types of fishes and birds worked as messengers with the tribes. do you know any name of those kinds of fishes and birds...don't tell me its crows(indeed they are the nasty ones)...but do you have anything interesting to help me out?...