企鹅有迁徙的习性，迁徙路程可长达几千英里，因此专家尚不清楚这些企鹅的出处、年龄及种类。
At present experts cannot say where the penguins were from, their age or their species. It is not unusual for some penguin species to migrate thousands of miles.
Ainley和Ballard在本周的《极地生物学》中指出，害怕被捕食已经影响到企鹅的日常活动，甚至它们的迁徙规律。
Fear of predators doesn't just affect the penguins' daily activities, however. It also influences the birds' migration patterns, Ainley and Ballard report this week in Polar Biology.
“在企鹅迁徙的过程中出现在巴西海岸并非不同寻常，但多数时间它们是活着的，”另一位生物学家Isabelle Nunes说。
It is not unusual for penguins to show up on the Brazilian coast during their migration, but most of the time, they are alive, said another biologist, Isabelle Nunes.
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