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A morphometric sexing approach for the Ring-necked Parakeet Psittacula krameri in Italy

Lorenzo Mentil, Auteur ; Paolo Monti, Auteur ; Fulvio Fraticelli, Auteur ; Giuseppe Maria Carpaneto, Auteur

Dans Ringing & Migration (33(2) July, 2018)

Only one fact is certain when sexing the Ring-necked Parakeet visually: adult males have a rose-coloured ring and a black bib that is fully developed by their third year. Sexually immature males (those

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