[QUOTE="Arizona Docent, post: 1213592, member: 1532"
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2) After being a zoo docent for over a decade (but no longer) and having spoken with dozens of docents around the country, I now feel the primary benefit of docents/volunteers is to provide extra eyes on the ground (a sort of unofficial security force). If someone is harassing an animal or climbing over a railing or whatever, they can either ask that person to stop or contact zoo staff to approach the person. Another important function is to provide assistant to visitors, such as directing them to the nearest restroom. The educational role is of lesser importance IMO. I know this sounds like heresy, but my experience is that most docents/volunteers know next to nothing about animals and have very little to teach the public. Even worse, they know very little about their own zoo. Ask a docent where a specific animal came from and good luck getting an answer (unless it's a baby that was born there)."
It is surely true that different zoos use docents and other volunteers differently when zoos are open. I don't think any claim is heresy, but what is true at one zoo might not be true at another, and what is true for one group of volunteers at a single zoo might not be true for another.
As someone who has volunteered at both zoo and art museum, I see a common practice of having a group of volunteers called Ambassadors who have the role you describe above. The Docents, however, at institutions with which I am familiar are expected to learn about the animals at the zoo and interact with visitors about them. So a docent standing near gorillas would be expected to know about gorillas as well as the zoo's particular troop.
It would be a tall order for every docent to know every animal in the zoo and where that specific animal came from. For this reason, many docents are trained specifically in one part of the zoo and would not be approved to act as a docent at another part. As an example, one person might know a great deal about animals of the African Savanna but not be approved to engage with visitors as a docent about Asian rhinos.
All this aside, being a docent at a six foot distance seems a difficult proposition, particularly when the visitors are children. Further, the fact that it may be possible for visitors to practice social distancing does not at all suggest they will, particularly when so many visitors are children all anxious to get close to the baby tapir or the baby gorilla or the baby red pandas.