Hi! I was wondering if you knew anything in particular about the Lincoln Park Zoo- I think it’s the only zoo I’ve ever been to that’s free/no admission! Especially considering the scale. The only thing that concerned me was that their polar bears seem to have a history of stereotypical behaviors (pacing, primarily) which I saw while I was there, but again, I’m a total outsider to the actual inner workings of the facility. Sorry if this is too vague, haha.
There's a couple city zoos like that with free entrance! It's a cool option, and indicative of the city providing enough funding for the facility to operate without the need for income from tickets. (Sometimes the way things are set up, I think they can be required to stay free). The St. Louis Zoo is another!
I don't know a lot about the Lincoln Park Zoo beyond what I've seen as a guest. I've gone a couple times and haven't seen anything that stood out to me as major red flags, but that's just from a public perspective and not a comprehensive assessment. They're AZA-accredited and have been for a long time, which is an indication of their general ethos and operations. I can't speak to more than that about their quality, unfortunately.
You're right about the polar bear stereotypies - that's a thing I've seen for myself. The thing is, with stereotypies - and especially with polar bears - they're not necessarily an indicator of current welfare or quality of life.
For folk who are new to the blog or unfamiliar with the concept, in animal care, a stereotypy is a "repetitive, invariant behavior pattern with no obvious goal or function." Examples often seen are repetitive pacing, head-bobbing, licking or chewing, and rocking or swaying. (It's important to note that not all repetitive behaviors are stereotypic behaviors - e.g. animals may pace when excited and anticipating the arrival of a keeper). Stereotypies can be an indicator of chronically poor welfare, under-stimulating enrichment, or inappropriate captive environments, but the important thing to know about that is that they often persist after the problem that caused them is resolved. So you can take a polar bear or an elephant that picked up a stereotypic behavior in one zoo and move them to another, much better situation, and they may still continue the stereotypy.
(The fact that stereotypies can be indicators of previous, but not current, welfare problems is a really important nuance that is often left out of discussions. Sometimes they're called "zoochosis", which anti-captivity folk define as "the psychosis induced by captivity"... but that's a very unscientific approach, and doesn't facilitate productive discussion or attempts to identify causes and alleviate the behavior. Zoochosis is nothing but a useless manipulative buzzword, folks.)
Bears in general seem to be prone to stereotypies in captive situations. I've seen some recent research that hypothesizes it's likely due to a lack of ability to engage in normal behavioral sequences, such as foraging. Polar bears seem especially prone to it. One 2013 study found that of the 55 polar bears in North America they assessed, 85% engaged in stereotypical pacing. It might be because they natural cover such a huge range in the wild that older, smaller exhibits haven't allowed them to move as much as they need to; it could also be due to a historical lack of appropriate enrichment. We don't really know, because there's so many potential factors, and the long lifespan of polar bears means longitudinal studies of multiple generations take a very long time.
These are both things the industry is working on fixing: newer polar bear exhibits are built to be much larger and more complex, and there's been a heavy focus in the literature for at least a decade on finding ways to reduce stereotypies by providing engaging enrichment and increasing bears' activity levels. Lincoln Park Zoo's polar bear habitat was renovated in 2016, and - while it looks rather boring to me, as a guest - it was apparently designed to allow for a lot of activity range and polar bear-specific needs.
Their current bears are both about 20 years old, and were transferred to the Lincoln Park Zoo after the new habitat was completed. It's entirely plausible the bears arrived with stereotypies from their previous facilities, given that the emphasis on improving polar bear care is younger than they are. Here's a photo I took there a couple years ago, of Talini (I think), engaging in a repetitive head tossing behavior. It's definitely hard to watch, as a guest, and I don't remember if they had signage up about it.
That all being said, I wouldn't judge the whole zoo based on the polar bear stereotypies, because there's so much at play there in terms of history and the evolution of care for the species. What's important is how they're handling it, and what they're doing to help encourage more normative behavior from the bears. Given the amount of research and effort the zoo field has put into addressing the topic in polar bears for the last decade, it's highly probable that a lot of staff time goes into helping reduce the amount of time those bears spend engaging in stereotypies.
