Among-year and within-population variation in foraging distribution of European shags Phalacrocorax aristotelis over two decades: Implications for marine spatial planning.

Highlights: [•] We identified key foraging areas of breeding European shags over a 23-year period. [•] 8years’ data captured over 90% of the foraging area used during the study period. [•] Over 60% of this area was captured with just 2years’ data. [•] Foraging range varied with sex, environmental conditions and population density. [•] Foraging locations of birds from different sub-colonies were spatially segregated. [Copyright &y& Elsevier]