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The Wandering Albatross mates every two years; do they all mate on even or odd numbered years, or is it staggered? If it is the latter, do they switch sometimes, or are they essentially two populations? Why do they mate every two years in the first place?

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The Wandering Albatross mates every two years; do they all mate on even or odd numbered years, or is it staggered? If it is the latter, do they switch sometimes, or are they essentially two populations? Why do they mate every two years in the first place?	74