If they need to be chastised, a Cockatoo hand, not necessarily the mother's, but perhaps her brother's--never the father's, however--administers the slap.

When they grow up, they take their chances for better and worse with the mother's people; fighting when they fight, though it be against the father's people; sharing in the toils and the spoils of the chase; inheriting the weapons and any other property that is handed on from one generation to another; and, last but not least, taking part in the totemic mysteries that disclose to the elect the inner meaning of being a Cockatoo or a Crow, as the case may be.
Now such a picture of the original clan and of the original inter-clan organization is very pretty and easy to keep in one's head.

And when one is simply guessing about the first beginnings of things, there is something to be said for starting from some highly abstract and simple concept, which is afterwards elaborated by additions and qualifications until the developed notion comes near to matching the complexity of the real facts.

Such speculations, then, are quite permissible and even necessary in their place.

To do justice, however, to the facts about totemic society, as known to us by actual observation, it remains to note that the clan is by no means the only form of social organization that it displays.
The clan, it is true, whether matrilineal or patrilineal, tends at the totemic level of society to eclipse the family.