The Animals Will Play While the Visitors Are Away: What Happens When Zoos and Aquariums Are Closed to Visitors?

A special issue of Journal of Zoological and Botanical Gardens (ISSN 2673-5636).

Deadline for manuscript submissions: closed (31 October 2022) | Viewed by 29825

Special Issue Editors

Department of Reproductive and Behavioral Sciences, Saint Louis Zoo, St. Louis, MO 63110, USA
Interests: animal welfare; animal behavior; wildlife endocrinology; zoos and aquariums; primatology; allostatic load
Department of Reproductive and Behavioral Sciences, Saint Louis Zoo, St. Louis, MO 63110, USA
Interests: animal welfare; animal management; reproductive biology; zoo studies

Special Issue Information

Dear Colleagues,

For decades, those in the zoo and aquarium community have been interested in understanding how visitors affect the animals in our care. Researchers began scientifically investigating this question in primates in the late 1970s, with the majority of early research suggesting visitors may be a stressful stimulus. However, as research expanded to include other taxonomic groups, the picture became far less clear, with studies reporting neutral and positive effects of visitors as well as negative ones. Recent studies have further demonstrated some neutral and positive effects even in primates, potentially due to larger, more naturalistic enclosures and advances in husbandry and management practices. One substantial limitation to understanding visitor effects is that zoos and aquariums rarely close to the public for extended periods. As such, the widespread closing of zoos and aquariums during the COVID-19 pandemic provided an unprecedented opportunity to study changes in animal behavior and physiology during prolonged, institution-wide closures. This special issue presents research conducted in zoos and aquariums during these closures to improve our understanding of visitor effects on animals in human care. This special issue will explore the impact of visitors on:

  • Space use and biological hot spots
  • Activity budgets
  • Social behavior
  • Physiological parameters
  • Behavior
  • Wounding rates
  • Responses to novel object tests

All manuscripts submitted to this Special Issue will have publication fees fully waived. Please contact the Editorial Office (jzbg@mdpi.com) if you have any questions.

Dr. Ashley Edes
Dr. David Powell
Guest Editors

Manuscript Submission Information

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Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Journal of Zoological and Botanical Gardens is an international peer-reviewed open access quarterly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1000 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • visitor effects
  • zoos
  • aquariums
  • human-animal interactions
  • human-animal relationships
  • physiology
  • behavior
  • activity budgets
  • space use
  • stress
  • welfare

Published Papers (9 papers)

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Editorial

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5 pages, 237 KiB  
Editorial
An Introduction to the Special Issue: “The Animals Will Play While the Visitors Are Away: What Happens When Zoos and Aquariums Are Closed to Visitors?”
by David M. Powell and Ashley N. Edes
J. Zool. Bot. Gard. 2023, 4(1), 82-86; https://doi.org/10.3390/jzbg4010009 - 23 Jan 2023
Viewed by 2354
Abstract
Zoos and aquariums are cultural institutions that rely on a steady stream of paying visitors, whose patronage comes in the form of admission fees or product sales, for their financial health, a condition that is vital to their continued delivery on the modern [...] Read more.
Zoos and aquariums are cultural institutions that rely on a steady stream of paying visitors, whose patronage comes in the form of admission fees or product sales, for their financial health, a condition that is vital to their continued delivery on the modern zoological mission, one that includes not only recreation but also conservation, education, and research [...] Full article

Research

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11 pages, 1749 KiB  
Article
Gorilla Activities and Social Behavior: Assessing Changes Associated with Absence of Zoo Visitors, Zoo Attendance, Time of Day and Increasing Maturity
by Cathleen R. Cox, Jill S. Werner and Joan I. Mead
J. Zool. Bot. Gard. 2023, 4(1), 39-49; https://doi.org/10.3390/jzbg4010004 - 05 Jan 2023
Cited by 2 | Viewed by 2224
Abstract
In this study we report on associations found between several variables and changes in gorilla behavior. Two groups of gorillas were observed, one was a family group and the other was a bachelor group. The zoo was closed to visitors for two periods [...] Read more.
In this study we report on associations found between several variables and changes in gorilla behavior. Two groups of gorillas were observed, one was a family group and the other was a bachelor group. The zoo was closed to visitors for two periods during the COVID-19 pandemic which made it possible to document any differences associated with the presence and absence of visitors. We also considered possible changes in behavior in relation to daily zoo attendance, time of day, and increasing maturity of group members. Output variables included six activities and one location which were assessed by instantaneous sampling, as well as level of aggressive and affiliative behavior assessed by recording all occurrences. Hour in which observations were done and successive months in the study, which serves as a measure of increasing maturity of younger gorillas, were the best predictors of activity and location, with each showing significant relationships with three output variables. Absence of visitors during zoo closure was also significantly associated with an increase in time the gorillas were proximate to potential visitor viewing areas. Aggression among the bachelors was lower when the zoo was closed and higher with maturation of the youngest male. Reviewing differences in level of aggression during the two periods of closure shows that decreased aggression among the bachelors was not a result of zoo closure. Full article
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30 pages, 1700 KiB  
Article
Behavioural Changes in Zoo Animals during the COVID-19 Pandemic: A Long-Term, Multi Species Comparison
by Naomi Frost, Anne Carter, Martin Vernon, Sarah Armstrong, Naomi Davies Walsh, Michael Colwill, Lorna Turner-Jepson, Samantha J. Ward and Ellen Williams
J. Zool. Bot. Gard. 2022, 3(4), 586-615; https://doi.org/10.3390/jzbg3040044 - 15 Nov 2022
Cited by 4 | Viewed by 3601
Abstract
Visitors are a prominent feature of the zoo environment and lives of zoo animals. The COVID-19 pandemic led to repeated and extended closure periods for zoos worldwide. This unique period in zoological history enabled the opportunity to investigate the consistency of behavioural responses [...] Read more.
Visitors are a prominent feature of the zoo environment and lives of zoo animals. The COVID-19 pandemic led to repeated and extended closure periods for zoos worldwide. This unique period in zoological history enabled the opportunity to investigate the consistency of behavioural responses of zoo animals to closures and subsequent reopenings. Bennett’s wallabies (Notamacropus rufogriseus), meerkats (Suricata suricatta), macaws (red and green: Ara chloropterus; blue and yellow: Ara ararauna; military: Ara militaris) and rabbits (Oryctolagus cuniculus domesticus) held at four zoological collections in the United Kingdom were studied during COVID-19 closures and subsequent reopening periods. Facilities were closed for three time periods during 2020 and 2021: March–June/July 2020; November–December 2020; January–April/May 2021. Behavioural data were captured during closures (maximum n = 3) and reopening periods (maximum n = 3) during five-min scans using instantaneous scan sampling with a one-minute inter-scan interval. General linear models (GLMs) and general linear mixed models (GLMMs) were used to investigate the relationship between observed behaviours and open/closed periods. Changes were observed in behaviour between open and closure periods in all species, and in some instances changes were also observed over time, with animals responding differently to different closure and reopening periods. However, no overt positive or negative impacts of the closures or reopening periods were identified for these species. The study species may have different relationships with zoo visitors, but no clear differences were seen across the species studied. The unique opportunity to study animals over a long period of time during repeated closure periods enabled a greater understanding of the impact of zoo visitors on animals. As with other work in this sphere, these data support the adaptability of zoo animals to zoo visitors. This work contributes to the growing field of research undertaken during the COVID-19 periods and enhances our understanding of the impact that these zoological closures had on a wider body of species in a number of facilities. Full article
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11 pages, 1117 KiB  
Article
Zoo Closure Does Not Affect Behavior and Activity Patterns of Palawan Binturong (Arctictis binturong whitei)
by Katherine Finch, Megan Leary, Lisa Holmes and Leah J. Williams
J. Zool. Bot. Gard. 2022, 3(3), 398-408; https://doi.org/10.3390/jzbg3030030 - 01 Aug 2022
Cited by 6 | Viewed by 4711
Abstract
Exploring the interaction between humans and animals has become increasingly important in the evaluation of well-being for species housed in zoos and aquaria. The COVID-19 pandemic saw the global closure of zoos and aquaria to visitors. Chester Zoo, U.K., was no exception, with [...] Read more.
Exploring the interaction between humans and animals has become increasingly important in the evaluation of well-being for species housed in zoos and aquaria. The COVID-19 pandemic saw the global closure of zoos and aquaria to visitors. Chester Zoo, U.K., was no exception, with the charity shutting its doors for the longest period in its 90-year history. Whilst access to site was strictly limited to essential animal care staff, recent investment in networked infrared CCTV camera systems allowed some species to be monitored remotely during this extraordinary period of zoo closure. Here, we used this equipment to investigate whether zoo closure influenced activity patterns and behavior of two adult Palawan binturong, Arctictis binturong whitei. The cameras facilitated behavioral monitoring over 24 h enabling the collection of a full activity budget, which revealed a natural crepuscular activity pattern. Overall, visitor presence was found to have a neutral effect on this species, with no significant difference observed in time spent engaging in den use, vigilance or travel behaviors during zoo open and zoo closed conditions. A neutral visitor effect was found when evaluating behavior over a 24 h period and during hours which the zoo would normally be open to visitors (10:00–16:30). This research presents new information on this elusive and understudied species in captivity, and promotes investment in monitoring equipment which enables more comprehensive behavioral sampling than traditional visitor-effect methods. Full article
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21 pages, 2954 KiB  
Article
Comparing Space Use and Fecal Glucocorticoid Concentrations during and after the COVID-19 Closure to Investigate Visitor Effects in Multiple Species
by Ashley N. Edes, Nathan C. Liu, Eli Baskir, Karen L. Bauman, Corinne P. Kozlowski, Helen L. Clawitter and David M. Powell
J. Zool. Bot. Gard. 2022, 3(3), 328-348; https://doi.org/10.3390/jzbg3030026 - 05 Jul 2022
Cited by 7 | Viewed by 2531
Abstract
We used the COVID-19 pandemic closure at the Saint Louis Zoo to examine visitor effects on space use and glucocorticoid levels in banteng, grizzly bears, polar bears, and western lowland gorillas. The study was divided into four six-week phases: closure in spring 2020, [...] Read more.
We used the COVID-19 pandemic closure at the Saint Louis Zoo to examine visitor effects on space use and glucocorticoid levels in banteng, grizzly bears, polar bears, and western lowland gorillas. The study was divided into four six-week phases: closure in spring 2020, reopening in summer 2020, fall 2020, and spring 2021 as a seasonal comparison. Space use data were collected using video, and fecal samples were assayed for glucocorticoids. Generalized linear models were used to examine differences in zone occupancy and glucocorticoids between phases. The banteng spent more time near visitors, and glucocorticoids were only temporarily elevated in two of five animals when visitors returned. The grizzly bears spent more time in their habitat than in the den, and the polar bear spent more time near viewing areas after visitors returned. Glucocorticoids did not differ significantly between the closure and reopening for any bears. The gorillas spent less time close to visitors immediately after reopening but this effect waned by fall; glucocorticoid data were not available. Overall, based on space use and glucocorticoid levels, we suggest visitor effects on the gorillas are neutral, on the grizzly bears are neutral or positive, and are positive on the banteng and polar bear. Full article
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12 pages, 480 KiB  
Article
Is Chimpanzee (Pan troglodytes) Wounding Frequency Affected by the Presence Versus Absence of Visitors? A Multi-Institutional Study
by Robin Elana Salak and Christina Cloutier Barbour
J. Zool. Bot. Gard. 2022, 3(3), 316-327; https://doi.org/10.3390/jzbg3030025 - 01 Jul 2022
Cited by 3 | Viewed by 2458
Abstract
Visitor effect studies have had inconsistent results, due in part to the inability to control for all confounding variables such as time of day, seasonal weather patterns, and so forth. This study represents the first instance where chimpanzee (Pan troglodytes) wounding [...] Read more.
Visitor effect studies have had inconsistent results, due in part to the inability to control for all confounding variables such as time of day, seasonal weather patterns, and so forth. This study represents the first instance where chimpanzee (Pan troglodytes) wounding frequencies were investigated across extensive time periods in the presence and complete absence of visitors, thus eliminating many visitor-related variables. Additional variables were eliminated through the zoo selection process, based on institutional responses to a 29-question survey, providing a novel approach to the question of visitor effects. The aim of this study was to determine if visitors were associated with a change in chimpanzee wound event frequencies across four 51-day time conditions, three of which occurred prior to the COVID-19 pandemic, and one during the first wave of pandemic-related zoo closures. We analyzed the archival records of 21 chimpanzees housed at three U.S. zoos. Due to the small number of wound events across all study windows, frequencies of “no wound” events were analyzed. A chi-square goodness of fit test was performed to determine whether the frequency of “no wound” events was equal between the “open” and “closed” trials. Results indicate that the frequencies did not differ, suggesting that chimpanzee welfare, as it relates to wounding, may not be adversely affected by zoo visitors. Full article
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18 pages, 1156 KiB  
Article
Communication from the Zoo: Reports from Zoological Facilities of the Impact of COVID-19 Closures on Animals
by Violet Hunton, Jessica Rendle, Anne Carter and Ellen Williams
J. Zool. Bot. Gard. 2022, 3(2), 271-288; https://doi.org/10.3390/jzbg3020022 - 15 Jun 2022
Cited by 4 | Viewed by 4409
Abstract
Zoos engaged in a range of communication types with prospective visitors during the temporary closures necessitated by the COVID-19 pandemic. This study sought to (1) investigate social media reports and public responses to zoo-animal-related posts over a one-year period during COVID-19 lockdowns; (2) [...] Read more.
Zoos engaged in a range of communication types with prospective visitors during the temporary closures necessitated by the COVID-19 pandemic. This study sought to (1) investigate social media reports and public responses to zoo-animal-related posts over a one-year period during COVID-19 lockdowns; (2) understand the use of reporting language in news articles concerning animal responses during zoo closures, and to investigate whether this differed across species; and (3) investigate how keepers perceived general animal behavior, and how they perceived animal behavior in keeper–animal interactions, during the COVID-19 facility closures. Data were collected from BIAZA-accredited zoos’ Facebook pages (March 2020 to March 2021) and news reports (Google search outputs from 20 March to 5 April 2021). Keeper perceptions were captured via questionnaires (May to August 2021). Data were collected on taxa, the reported behavioral changes and the language used in media communications. In Facebook posts and news reports, mammals were more frequently represented than was expected (p < 0.05). Behavioral responses were more frequently negative (p < 0.05) and less frequently positive or neutral (p < 0.05). Keepers reported overall behavioral changes, as well as changes during their own interactions with animals. On Facebook, mammals were described using a combination of behavioral descriptions and anthropomorphic terms, which were used more frequently than was expected (p < 0.05). In the news reports concerning primate species, anthropomorphic descriptions were used more frequently than expected (p < 0.05), while behavioral descriptions were used less frequently than expected (p < 0.05). The reports regarding the Carnivora were the reverse of this. This study enabled an understanding of the impact of the temporary closures on the animals, and how this impact was communicated to the public. The findings may reflect the relationships that humans have with animals and the need for communication methods that will capture visitors’ interest and induce empathy with the various species. Full article
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15 pages, 865 KiB  
Article
Behavioral Changes of Brown Bears (Ursus arctos) during COVID-19 Zoo Closures and Further Reopening to the Public
by Aleksei A. Podturkin
J. Zool. Bot. Gard. 2022, 3(2), 256-270; https://doi.org/10.3390/jzbg3020021 - 11 Jun 2022
Cited by 6 | Viewed by 2577
Abstract
Visitor effect studies have been of keen interest for decades, but there have been only anecdotal opportunities to investigate the impact of the prolonged absence of visitors on animal welfare in zoos. In some zoos, bears are actively involved in animal–visitors interaction through [...] Read more.
Visitor effect studies have been of keen interest for decades, but there have been only anecdotal opportunities to investigate the impact of the prolonged absence of visitors on animal welfare in zoos. In some zoos, bears are actively involved in animal–visitors interaction through begging, which gives them some degree of control over gaining food rewards throughout the day when visitors are present. Prolonged visitor absence may, therefore, represent a loss of control and have a negative impact on the bears’ welfare. In this study, we investigate the behavior of four brown bears (Ursus arctos) in three zoos to see how the animals’ behavior changed depending on the presence and absence of the public during zoo closures in 2020 related to the COVID-19 pandemic. The bears’ behavior was assessed using activity budget analysis and novel object tests. The results showed that the bears behavior varied between facilities and that there was no effect of visitor presence for the individuals who had access to indoor holding space. The results of the study are discussed in terms of choice and control and their impact on the wellbeing of bears in zoos. Full article
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Other

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8 pages, 795 KiB  
Case Report
Does the Absence of Zoo Visitors during the COVID-19 Pandemic Impact Gorilla Behavior?
by Mary Masman, Clarice Scarpace, Angelina Liriano and Susan W. Margulis
J. Zool. Bot. Gard. 2022, 3(3), 349-356; https://doi.org/10.3390/jzbg3030027 - 07 Jul 2022
Cited by 7 | Viewed by 2943
Abstract
Whether or not primates are behaviorally affected by the presence of visitors in a zoo setting is a question of great relevance to zoo animal well-being. The situation imposed by the COVID-19 pandemic provided an unusual opportunity to examine how the absence of [...] Read more.
Whether or not primates are behaviorally affected by the presence of visitors in a zoo setting is a question of great relevance to zoo animal well-being. The situation imposed by the COVID-19 pandemic provided an unusual opportunity to examine how the absence of visitors impacts behavior. We took advantage of this opportunity to study the behavior of a gorilla troop during periods of no-visitors compared to our long-term database on gorilla behavior during normal zoo operations. While there were notable individual differences in response to visitors, we found no significant relationship between presence of visitors and behavior. These results suggest that the presence of visitors does not have a significant impact on behavior and well-being of zoo-housed gorillas. Full article
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