Last I knew they can be seen from Amberwood executive golf course. They are off to the right of the 6th hole if I remember the course right.
This is a picture from when they were on Old Mill.
I miss having them roaming also. It was just one more thing that made the experience of TV unique.
I have no idea the real story, but heard two rumors at golf courses, bars, etc:
1. Someone was injured and sued.
2. Morse had someone sue so he could put up houses where the buffalo roamed.