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You can hear the cacophony before you actually see the mass of bobbing birds, and it's a stunning sight to behold.

Cinda Chavich

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The fiercely territorial birds mate for life, and return to the same nest year after year.

Cinda Chavich

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Northern gannets use seaweed to build their nests at Gaspé.

Cinda Chavich

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Each of the 60,000 nests here is a mere 60 centimetres away from its neighbour, so territorial disputes erupt continuously.

Cinda Chavich

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When the adult gannets now nesting in Canada fly south in October, they may encounter oil.

Cinda Chavich

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