Evidence map›Paper›PMID 42064737›Full record

ArticleAnimal welfare (South Mimms, England)2026

Enclosures with flexible structures stimulate species-typical locomotion, but not locomotion quantity, in zoo-housed Bornean orangutans (

Jens Willem Geijtenbeek, Lisette van den Berg, Tom Roth

Abstract read
In one paragraph

Article in Animal welfare (South Mimms, England), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

  1. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors.

Jens Willem GeijtenbeekAnimal Behaviour & Cognition, Department of Biology, Utrecht University, The Netherlands.
Lisette van den BergApenheul Foundation, Apeldoorn, The Netherlands.
Tom RothAnimal Behaviour & Cognition, Department of Biology, Utrecht University, The Netherlands.ORCID https://orcid.org/0000-0002-2985-120X

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Orangutans are the largest arboreal mammals and the only great apes that spend most of their lives in the treetops. To navigate this environment, they use a wide range of locomotion behaviours. In zoos, however, orangutans often show increased terrestriality and rely on locomotion behaviours that are rarely seen in the wild, such as quadrupedal locomotion. These differences raise welfare concerns, as they may impair the development of their musculoskeletal system and reduce energy expenditure, thereby increasing obesity risk. Enclosure design may mitigate these effects by encouraging more species-typical locomotion. Therefore, this study aimed to investigate differences in locomotion behaviour of orangutans across two enclosure types, one with more flexible structures and one with more rigid structures. We performed focal observations of seven Bornean orangutans (

Indexed as

Animal welfareenrichmentgreat apeslocomotionmovementprimate welfarezoo welfare

Identifiers

PMID42064737
PMCPMC13126203

What OpenQuestion holds

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LicenceCC BY-NC-SA
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.