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- Zwarts, Leo; Ens, Bruno J.; Kersten, Marcel; Piersma, Theunis
- Ardea 1990 v.78 no.2 pp. 339-364
- altitude; birds; equations; flight; migratory behavior; molting; plumage; spring; summer; wind speed; wintering grounds; Europe
- ... Wader species wintering on the Banc d'Arguin increased their body mass by about 40% during the 4–6 weeks before their departure in spring. This estimate is based on 1) the empirical fact that most waders which had finished or suspended their body moult into summer plumage were heavy and thus ready to take off, and 2) the assumption that only the heaviest birds in the population left, which allowed ...