Falcons, owls, vultures and other raptors are at risk, however, Shannon a master falconer and Ben a world renowned rehabber make a big difference.     On a beautiful day in Kwa-Zulu Natal, South Africa, Chicken swoops through the air, eliciting wondrous reactions from children and adults alike. Chicken (a Lanner Falcon) appears bold and fearless in the sky, although he still bears a nickname from the kind of noises he made in his childhood. Without the help of Shannon and her husband Ben, however, this beautiful Lanner Falcon would not be able to soar in the skies today. Chicken…