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According to literature reports, the crested breed of the domestic duck (Anas platyrhynchos f. dom.) is described as a variety with high pre- and post-natal mortalities, malformations in skull and(More)
The feather crest of the domestic duck (Anas platyrhynchos f. dom.) represents a peculiar mutation of the integument of the head, which has been known since the 17th century. In literature this is(More)
Congo African Grey Parrots (GP; Psittacus erithacus erithacus) from four different avicultures, presented in the Clinic for Exotic Pets, Reptiles and Birds, University of Veterinary Medicine(More)