Birds are more commonly associated with the feminine.  In parts of rural Africa, ‘Hen’ refers to a motherly woman, while ‘Dove’ is the young girl. In Britain, ‘Chick’ and ‘Bird’ are synonyms for girlfriend, while ‘old Crow’ refers to the nagging old woman. This rule begs to be broken, and ‘Vulture’ comes to mind, an extremely masculine symbol of the guy who pursues all these girls.