This is absolutely awful news! Such a sad thing to hear. I took some lovely photos of him a few months ago, and was so excited that a calf had finally been born in Australia! I'm gutted - absolutely gutted hearing this.
I agree I also am gutted by this news, At best I believe a cow can have one calf every four years. I believe the plan started out that TWPZ were to get two pairs but only the one pair was obtained, I feel TWPZ should try and obtain a second female to increase breeding here. The only other zoo that I have heard of over the years that showed interest in having them was Australia zoo, I had hoped a couple of the larger zoos here like Monatro and Werribee would take an interest in the species.