Progressive ontogenetic niche shift over the prolonged immaturity period of wandering albatrosses.

Indeed, young immatures here had higher blood δ 15 N values than breeding individuals (data from a previous study on the same population [ 8 ]), but there was a decreasing trend towards lower values as they aged ( figure 2 ).

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Interestingly, blood δ 15 N values decreased with age ( figure 2 ), but the relationship was marginally non-significant, as shown by the small effect size ( table 2 ).

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