Nidasi, almost unique, is from Milan, Nidasio is from the Milan area, Pavia, Milan, Besate, Gaggiano and Abbiategrasso in the Milanese area, and Marcignago and Vigevano in the Pavia area, they should derive from the medieval term tardolatino nidasius (bird, recently born) incapable of flying, by foolish, incapable extension): "..Item note quod accipitrum alius vocatur nidasius, qui scilicet accipitur primo de [nest] antequam induat plumas; secundus vocatur ramengus, qui scilicet incipit fly de ramum branch".
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