Fig. 1. Mean lean dry mass (± S.D.) of different organs in birds from Ventotene, after a long-distance flight, and from Switzerland, after only short migratory movements. Bm, breast muscles; H, heart; L, liver; I, intestine; G, gizzard; K, kidney; Lm, leg muscles. Organs that take up a significantly (P<0.05) smaller proportion of total lean dry mass in Ventotene birds than in Swiss birds are marked with an asterisk (compositional analysis).

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