Both - they have kept bears for years but the old group died out and the pair that bred only arrived in recent times after a short bearless gap of a year or so (for the 2010 season(?) - they weren't there in 2009 according to kiang's photo in the gallery).
I believe the original brown bears came from the now closed Windsor safari park and the enclosure construction was funded by a dowry provided by the former owners.
The bear in the background of the photo is the male Bull (now renamed Homer) who came from Orsa. He was later joined by the female Nelly (now renamed Marge) who also came from Orsa. Their male cub is called Loki and he was born early this year.
