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Nutrient limitation of clutch size in waterfowl : is there a universal hypothesis?DROBNEY, R. D.The condor (Los Angeles, CA). 1991, Vol 93, Num 4, pp 1026-1028, issn 0010-5422Article

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New Anatidae population estimates for eastern China : Implications for current flyway estimatesLEI CAO; BARTER, Mark; GANG LEI et al.Biological conservation. 2008, Vol 141, Num 9, pp 2301-2309, issn 0006-3207, 9 p.Article

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The effect of depth on the diving behaviour of common eidersGUILLEMETTE, Magella; WOAKES, Anthony J; HENAUX, Viviane et al.Canadian journal of zoology. 2004, Vol 82, Num 11, pp 1818-1826, issn 0008-4301, 9 p.Article

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Factors influencing leadership : a study of goose families (Anser indicus)LAMPRECHT, J.Ethology. 1991, Vol 89, Num 4, pp 265-274, issn 0179-1613Article