An adult and a child , both wearing hats , are outside , looking at a black and white rooster in a cage .
It is certain that a father and his son examine a rooster at a petting zoo .
Chances are about even that a father and his son examine a rooster at a petting zoo .
It is certain that a father and his son examine a rooster at a petting zoo .
A father and his son examine a rooster at a petting zoo .