Fig. 2From: Compound-specific stable isotope analyses in Falkland Islands seabirds reveal seasonal changes in trophic positionsTrophic positions calculated from CSIA-AA of three penguin species breeding at New Island, during the breeding season (blood samples) and during moult (feather samples). Blood and feather values were compared using t-tests, and significance levels are marked with asterisks (* for P < 0.05, and *** for P < 0.001)Back to article page