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2. Babbitt, G., 2000. Morphologic, energetic, and behavioral aspects of reproduction in a captive group of Scarlet Ibises (Eudocimus ruber). M.S. thesis. University of Florida, Gainesville, FL
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4. Annual cycles of migratory fattening, reproduction and moult in European quail (Coturnix coturnix);Boswell;J. Zool. London,1993
5. Assessing body condition in birds;Brown,1996