Who, what, why: How aggressive are robins? - BBC News
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Descrição
The robin has been voted the UK's favourite bird - but attention has been drawn to its fiercely territorial reputation.
Britain has spoken – and chosen a vicious murdering bully as its national bird, Philip Hoare
European robin - Wikipedia
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Traffic noise increases aggression amongst rural robins - Discover Wildlife
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Traffic Noise Makes Rural Robins More Aggressive - BBC Wildlife Magazine
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Do Robins Fight To The Death?, Aggressive Robins
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