Rhenen Zoo, Ouwehands Dierenpark Rhenen

Visit(s)

22.12.2025

It has been five years since I last visited Ouwehands Dierenpark in Rhenen, and the 2020 visit was essentially nothing more than a brief photo session. The 2018 visit was a more thorough one. So, if any comparisons are made, they are with this visit in 2018. Most important objective of today is the koala exhibit, as of last year (2024) Rhenen Zoo became the first and only zoo in the Netherlands to house koalas. Three of them, in fact. So, on a chilly, overcast December day in 2025, I finally made good on my plan and travelled to the Zoo in Rhenen.

Signage and information

information panel on Grevy's zebraMy first observation after entering the grounds is the change of the information panels. I had several remarks on the old panels, and the overhaul of the panels addresses some of my complaints about the amount and depth of information on the species on display and the languages used. The new type of information panels show great improvement, and fortunately they refer to the IUCN (Internation Union for Conservation of Nature) concerning the conservation status of the species. I have never understood why so many zoos wants to present the IUCN status in their own style and not use the Red List logo – as the latter is very well known to those interested in conservation and easily recognisable. Ouwehands Dierenpark also has its own depiction of the IUCN red list status.

But anyway – the panels provide good information about habitat, geographical origin, nutritional requirements (feed), and peculiarities. Unfortunately it is nearly 100% in Dutch. Did the old panels provide summaries in English and German, the new ones only provide the species name in English and German, including the scientific name of course. Another advantage with the new style of information depth level is the fact that is made clear what subspecies is on display. So this time the panel at the orangutan enclosure actually reads Bornean orangutan. In my opinion that is an edu cational step forward.

icons at information panelWhat bothers me though, is the use of nonsense icons for specific characteristics of the species. For instance they use icons for self-reliance and endurance, which do not speak for themselves and are not universally accepted as far as I know, and thus will not be recognised.

The Koala Forest (or Koalia)

Naturally, the koalas should have been the highlight of the visit. Unfortunately, they are not! This is partly due to my expectation of this brand new exhibit. The new building, dubbed Koalia - a name that, if I’m honest, sounds like something only the Dutch could come up with. The English version, Koala Forest, rolls off the tongue a bit better, but even that doesn’t quite match what I found. Each of the three koalas (two males, one female) is kept separately, and the bare tree branches in either enclosure (and if my eyes didn’t deceive me they were as artificial as they were bare) hardly qualifies as a forest. Still, there they were, the stars of the zoo, perched in their minimalist habitat. To check if my expectations were off, I did some online research and this added up to the information in the box below.

Koala Habitat
Koalas in the wild live in a range of bushland habitats in Australia, from coastal islands and tall eucalypt forests to low inland woodlands. Suitable habitats are those that show the presence of tree species preferred by koalas (usually eucalypts, but also some non-eucalypts) and the presence of other Koalas as the two main factors.
Koalas are mostly nocturnal and are generally solitary animals. Although they live in societies, and need to be able to come into contact with other koalas, they normally stick to a distinct home range, unless they look for a partner to breed with. Home ranges may overlap, while the size of these home ranges can vary depending on the quality of the habitat and the koala’s sex, age, and social position. On average, a koala’s home range includes around a dozen trees, of which one is the preferred tree.

Koalas in zoos
To maintain and breed koalas successfully in captivity it is important to understand their diet preference, which is a challenge. Due to their one-sided diet of eucalyptus leaves zoos need to establish plantation-grown eucalyptus trees, for each koala 500 – 1,000 trees of 5 or 6 eucalypt species. The koalas should be provided daily fresh eucalyptus leaves. These will, when eaten, provide the animals with the required amount of water - like in the wild.
Koalas in captivity benefit from a habitat that closely resembles what they experience in the wild. They are sensitive to surrounding noise, temperatures and lighting. Their environment should have lighting which resembles wild light cycles and temperatures of around 22°C. UV exposure once or twice a week ensures healthy bone growth. Substrates can be used on floors to ensure a soft landing if they should fall. This should be changed regularly to prevent bacterial build up.
Koalas primarily live in trees. Therefore, the enclosure should contain vertical and horizontal branches that connect together. Available tree trunks should fork to create spots where the koalas can sleep or sit in. The vertical branches should be higher than 1.5 metres. Koalas should be encouraged to climb around the branches freely and also be able to get to the ground whenever they want to as well. Trees should not be painted on nearby walls as koalas can mistake them for real trees and injure themselves attempting to climb them.
Koalas are very sensitive to noise and disturbance. They can become stressed easily when they don’t feel safe within their environment. Consistent loud noises can cause a koala to stop eating through stress, meaning that they start to loose weight. Human interaction can also be a contributor to stress and eating disorder.

(Source: website Australian Koala Foundation; International Fund for Animal Welfare, website Australia - Koala; San Diego Zoo Wildlife Alliance library, Koala factsheet; website Wild Welfare, Care for Us – Koala)

Considering the koala’s natural habitat, the situation at Rhenen Zoo seems to reflect more or less what the zoological community has understood so far about the species’ needs. Although on a smaller scale - as always in zoos – the indoors artificial habitat allow the koalas to express natural behaviour. The birth of a joey in May 2025, about a year after the animals arrived at the Zoo, is kind of proof for that. It recently, mid-November had shown its head for the first time popping out of the pouch. And with that, my disappointment about the koalas was gone.

The outdoor facilities for the koalas lack the noise cancelling provided by the windows of the indoors, so, if the little fluffy grey marsupials are as relaxed as they are indoors is questionable.

aboriginal mural koala forestStill the building as a whole and the way it is presented bears disappointment. While it claims to be dedicated to Australian biodiversity, the display is a joke - only two species, the koala and the Parma wallaby, are on show. There are information panels describing the biological diversity of Australia, and a wall features Aboriginal-style paintings, but that’s about it.

Additionally, during the construction of Koala Forest, management announced that a butterfly garden - a 170 m² "immersive indoor garden" - would be created in the central hall. Over a year after opening, however, there are still no butterflies in sight. It turned out, upon closer inspection, the space was unsuitable. To allow butterflies to fly freely in the hall, modifications to the indoor environment are needed to create the right climate for them.

Some highlights

Ouwehands Dierenpark has succeeded in creating the right environment for koalas to reproduce just a year after their arrival. Two other successful breeding results are worth mentioning. On 10 June this year, three cubs were born to the zoo's Amur tigers. The six-month-old cubs are doing well and are becoming increasingly independent. Even more impressive, however, is the birth of twin female clouded leopard cubs on 10 March 2023. The elusive clouded leopard is very particular about its habitat. It absolutely needs hiding places to protect itself from the prying eyes of the public, and as an adept climber, access to trees is essential. Apparently, the clouded leopard's enclosure at the Zoo tick all the boxes, because reproduction is an expression of good animal welfare and almost the ultimate reward for good care.




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about zoos and their mission regarding breeding endangered species, nature conservation, biodiversity and education, which at the same time relates to the evolution of species.

Goal: 7000 tigers in the wild

Tiger range countries map

 

"Tiger map" (CC BY 2.5) by Sanderson et al., 2006.

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