Patna was born in the Tierpark (= Animal Park) Berlin, not in the Zoo Berlin. These are two different zoos! Patna`s mother is Betty, born herself in the Tierpark in 1995. Betty`s mother is Jhansi and her father a male from San Diego, Jhansi was imported pregnant. Patna`s father is the male from the Tierpark, Belur. Betty injured Patna after birth (she stepped on his leg accidently) and a few days later he had to be removed for hand rearing because the wound could not heal with Betty constantly licking it. Betty became pregnant again immediately and gave birth to Saathi in 2005, father is again Belur.
Yodha now resides in the Zoo Berlin, but he has fathered one calf in the Tierpark who was born in the same year like Patna, in 2004 - Jakob. Jakob`s mother is Jhansi (Patna`s grandmother), and Jhansi does not come along with Belur. They hate each other. So she was shipped to the Zoo for mating and it worked. She was moved again to the Zoo a few months ago but this time she didn`t become pregnant, so I guess she has to travel again. Yodha is nevertheless becoming father again, female Narayani who lives with him in the Zoo is pregnant and due in some months.
Complicated story! Anyway, I am very happy Patna lives in a good zoo now.