I agree that the lack of indoor viewing is a major drawback.
@Team Tapir- ISIS is out of date, as there are now just two females, Tara and Sally, left at the zoo. Willy, the zoo's male, died last year.
@Fisi- I have not heard any plans for the Orangutans in the wake of Willy's death. It will be interesting to see what happens.
In other news, Barbara, a 29-year-old Bald Eagle, died at the zoo yesterday. Her keepers found her unresponsive with an irregular heart beat. Tests showed that she had an enlarged heart.