Rueppell's Griffon and White-headed Vulture, whilst forming 'The Ring of Vultures' - one White-headed and two Rueppell's flying back and forth in a triangle.
The bird show lasted around 40-45min and basically consisted a just bringing out bird after bird and getting them flying around for 5min, often overlapping birds.
The species used at the show I saw were:
Southern Ground Hornbill
American Bald Eagle
European Griffon Vulture
Hooded Vulture
Chimango Caracara
Eastern Grey Crowned Crane
King Vulture
White-headed Vulture
Rueppell's Griffon Vulture
Marabou
Harris Hawk
Abdim's Stork
Red-tailed hawk
Black Kite
European White Stork
Sacred Ibis
Straw-necked Ibis
African Spoonbill
