I cornered a poor woman in Chimp World yesterday who turned out to be an education officer, not a keeper, and asked if she knew who Tekita's father was. She said she thought it was Pippin, but then seemed a bit embarrassed when I pointed out this meant that Tekita would have bred with her father for Tumba and Talia, and mumbled 'um yes, I think there was some 1st generation inbreeding'.
Potentially, Pippin could also be the father of Kora who was born to Billyjoe in 1999. She's the chimp who seems to be balding, though I have no idea if the balding gene is recessive or not.
Another aspect to the Colchester chimp family tree is that Tombe, the dominant male, is listed as Tekita's half brother. Yet the tree shows Tara's only offspring as Tekita ..... indicating that the 'half' relationship between Tekita and Tombe must be via their father. So ..... if Pippin is Tekita's father, that'd also mean he was Tombe's father via a different female chimp (no longer at Colchester ?)