they dive deep underwater 16 m/hr and feed mainly on fish, krill, squid and otherTheir nests are made on the rocky shores. They prefer the inland grasslands for nest building. They carry and pile stones, pebbles, grass, sticks, and anything they can find to make a circle. Gentoos can be very aggressive and will fight over stones or take stones and nest building material away from other birds' nests.
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