@Arizona Docent, I never looked at it that way before! I am a member of 2 of the last 3 free zoos in the US: National Zoo, Lincoln Park Zoo and St. Louis Zoo. I should join SLZ! I became a member of the National Zoo because of their problems with the director who shall remain unnamed as a way to show support.
I am thinking of joining San Diego. I thought the AZA membership was a good idea until I saw San Diego is not on their list of reciprocal zoos.
@bongorob, when I was a docent, our docent notes were full of the comings and goings of many zoo staff whom we never met & who never visited the docent office. It was kind of wasted space, I thought. I'd rather read about the animals.