摘要：

A five and a half weeks old female Kestrel exhibiting osteopathy of the pectoral and pelvic limbs, including symmetrical hyperdactyly, was investigated in order to clarify the pattern of the involved anatomical alterations and the possible causes of this developmental malformation. In the pectoral limb it consisted of a triplication of the alular digit, in the pelvic limb of a duplication of digit I. The live young Kestrel was observed for a period of two weeks to ascertain that it was unable to fly or procure prey on its own. After its death radiographs were taken and, apart from an eidonomic inspection including the wing claws, a detailed macroscopic dissection of the musculature of the pectoral and pelvic limbs was carried out using the in-water-method. Consecutive dissection steps were documented by

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