This is the article I mentioned above, as well as some surprise takeaways:
AT THE ZOO - The Washington Post
https://www.washingtonpost.com/arch.../1990/06/17/at-the-zoo/66ebffbc-5bbb-47b8-a6d 5-22a1e118ef14/
** Memories of the Bat Cave, which was under Lion/Tiger Hill via a door facing the restaurant! I waited too long to take a look. It was closed well over a decade ago when it's population had exploded to five times its capacity. They sent all the bats away, and began a LONG cleanup of all the guano, after which it was thought the bats would return. They never did. There's a space just ripe for an exhibit, a nocturnal exhibit.
**The reptile curator did a study of the visitors touring the exhibit and was disheartened to find that the average person spent 7-8 on each exhibit and had left the building in 14". After probing further, he concluded that people came to the zoo to be with family and friends and "may not really care about our exhibits."
**Escape stories including one with then 3-year-old Bonnie and her tiny (now huge) son Kiko ending up on the Great Ape House roof!
**Even with the Great Ape House completed in 1981, there were as few as one or two gorillas until 1985 when Mandara and Kuja, unrelated, arrived aged 3 and 2, then in 1988 Mesou and Gus, 33 and 6. Tomako, 28 in 1990, was the silverback, and visitors--including me--assumed they were one nuclear family, but in fact were all unrelated. I remember them all, especially Gus as a silverback. Mandara is now 38, which must be at the upper limits of an average lifespan.
**I was wrong in an earlier post. At least in 1990, there were two rhinos living in that first stall from the left in the Elephant House. Perhaps they were rotated inside/out such that I only ever saw one. Later, when trying to squeeze a rhino yard into Elephant Trails, it was definitely only one, though.
**The zoo had Malayan sun bears! And a Reeve's muntjac that loped out of the zoo down Connecticut Avenue until it was found in a backyard! And a Barbery ape that jumped out of Monkey Island into a baby stroller and ended up in the basement of the restaurant!
**Ling Ling the panda was "nasty" and attacked her keeper!
**Sumatran tiger Kerinci, the wild-born, genetically-valuable mother of Soyono, had been imported from Indonesia just a couple years earlier in the late 1980s. She came from the wild and was very young--I wonder how they got around CITES Treaty regulations?
**PETA activists came every year on Christmas with non-alcoholic champagne for the keepers and fruit and nuts for the herbivores while singing anti-zoo Christmas carols! My, how things have changed!