'Too late' to save northern white rhino

Here is a depressing story out of my local paper's web site in San Francisco - SF Gate
It seems that the various northern white rhinos in zoos around the world are not breeding in captivity.  They have pretty much died out in Africa.  They have decided to send some of the few that are left back to a preserve in Kenya.

"A 38-year-old northern white rhino born in south Sudan ate African grasses for the first time in three decades Monday, the first full day on the continent for the world's last four northern white rhinos capable of breeding."

This is the last chance they have to save this subspecies. 

"The four rhinos landed in Kenya on Sunday after flying in from a zoo in the Czech Republic. They were transported in wooden crates that read "Last Chance to Survive." Only eight northern whites are believed to remain."...(Cont)...