Having recently been to the completely refurbished institution of the now named BioParque do Rio, I decided to add my own review of the institution here to share my points of view of the place. I'm not gonna dive very deep on species lists for the exhibits that keep many different ones, as
@Enzo has developed a great one in a thread specifically about it:
Species list for Bioparque do Rio [Rio de Janeiro Zoo] I added links through the text to my pictures of the institution posted here in zoochat so that you guys can better understand and view the place's structures.
For those who might not know, the former zoo of Rio de Janeiro city (Rio zoo) once held one of the largest animal collections in Latin America, and still kept a considerably big amount of species, specially native primates, until the begining of the renovation in 2018. From this moment on, with the new population plan, the zoo phased out various species to be able to enlarge it's exhibits, as well as building new ones, for better holding the ones chosen to stay. A very wise decision IMO, once the whole space is around only 30 acres large.
Resuming the review, I couldn't forget to mention at first the main gate. An extremely beautiful piece of art, donated in 1817 to the brazilian imperial house as a wedding gift to prince (futurally emperor) Pedro I, by british duke of Nothuremberg. The gate is a replica of London's Syon house main entrance.
Entrance view from the inside - BioParque do Rio - ZooChat
Getting in the park, we face the start of the main avenue, named "Macaco Tião" as a tribute to a chimpanzee that used to inhabit the park many years ago. The history of this individual is long and interesting, and we could even talk about it in a specific thread in the future.
Main avenue - BioParque do Rio - ZooChat
The first exhibit that can be seen, at the right hand side of the avenue, is the tropical immersion complex.
Tropical immersion entrance - BioParque do Rio - ZooChat
It is a completely new structure built over a former outdated macaw aviary and some other smaller exhibits. The complex has six exhibits, being five individual ones and a huge walkthrough aviary, holding 40+ species of the brazilian fauna, between birds, reptiles and small mammals. Between all the conservation programs the zoo claims the complex develops, the scarlet ibis one is one of the most interesting IMO. The species is extinct in Guanabara Bay, and the institution plans to reintroduce it in the future. The big aviary was one of the strongest points of the whole renovation, as it is truly spacious and clearly well structured to satisfy the animals necessities.
Tropical immersion, big immersive aviary - BioParque do Rio - ZooChat
As you leave the complex, you follow a trail to the area of the Reptile village, but before we reach the reptiles, we see a square in wich the Lear's macaw exhibit is located. The space was built years before the renovation, while the institution was still Riozoo, and only received a small refurbishment. Good decision IMO as it was already a fairly good structure, with no need of major changes:
Lear's macaw exhibit - BioParque do Rio - ZooChat
Reaching the first reptile exhibit, we face a considerably large enclosure that is still empty, but has a crocodile statue right beside it. One might think the institution's crew plans to add a species of crocodile to the population plan in the future. Following the trail, we see the broad-snouted caiman enclosure, wich also holds a big amount of species of freshwater turtles. The enclosure can be set in two as there is a movable fence in the middle.
Caiman/turtle exhibit - BioParque do Rio - ZooChat
Right after, we reach the python exhibit, wich has a really good size and ambientation. One of the best snake exhibits I've seen, among with Parque das aves enclosures.
Python exhibit - BioParque do Rio - ZooChat.
As we leave the trail of Reptile Village, we reach the main avenue again, and I chose to follow to the Amazonian primates islands. The area was built over the former petting zoo, wich was completely destroyed to make way for two lakes with two islands each. Islands from one of the lakes are linked to the other ones from the other lake by a bridge that passes above visitors head, allowing the monkeys to cross them and having access to more space and climbing structures. I like the fact that the islands are associated with a handling area, something uncommon in zoos in Brazil.
Amazonian primates islands - BioParque do Rio - ZooChat
Amazonian primates islands - BioParque do Rio - ZooChat
After the islands, we reach the maned wolf and Sumatra exhibits, wich are located side by side. Geographically super inacurate, and they visually were built in a hurry, as they were some of the last structures to be finished in this first and larger stage of the renovation. Five grottoes from the old zoo were simply aglutinated in a way to form two exhibits with an ok size. In one of them, maned wolves, and in the other, sumatran orangutans and crab-eating macaques. The brick walls that form the grottoes were simply covered with green paint, and the moats continued identical. Chekck out a picture
@devilfish took from the former exhibits and the one I took from what it looks now. Not a lot of difference. Better work could have been made here:
Former exhibit (there were six very similar exhibits like this one):
Chimpanzee enclosure - ZooChat
Now:
Sumatra exhibit - BioParque do Rio - ZooChat
and
Maned wolf exhibit - BioParque do Rio - ZooChat
Following the trail, we reach the Cerrado Biome exhibit, holding brazilian tapir, capybara, collared peccary, greater rhea and giant anteater. The exhibit has a good size, considerably good water area and viewing bridge, but the Cerrado Biome exhibit in BH zoo is still more practical (and larger) IMO, although it's possible to have a closer view from the animals in Rio's one.
Cerrado biome exhibit - BioParque do Rio - ZooChat
Cerrado biome exhibit - BioParque do Rio - ZooChat
Leaving the complex and following the avenue again, we reach two exhibits that are payed apart from the zoo's tickets, wich are the new petting zoo (wich I didn't visit nor payed a lot of attention) and the twilight vivarium, holding owls, reptiles and some species of arthropods (of course, in separated exhibits inside the complex). Nothing much, and not very large, but I liked the theming, although I only saw it from the outside.
Petting zoo - BioParque do Rio - ZooChat
Twilight exhibit - BioParque do Rio - ZooChat
In the end of the renovated area, where the fences don't allow you to continue walking through the avenue, there are the Burle marx gardens, based on projects of brazilian architecht Roberto Burle Marx. It holds chilean flamingos, and has a very nice look:
Burle marx gardens - BioParque do Rio - ZooChat
Now we follow to the left as we reach the "Kings of the jungle" complex, holding Lions, spectacled bears and bengal tigers. The exhibits have quite a small size when compared to many of the major zoos in the country. They have an ok ambientation when talking about logs, rocks, and water areas, but lack on foliage, in some cases:
Bengal tiger exhibit - BioParque do Rio - ZooChat
Lion exhibit - BioParque do Rio - ZooChat
Spectacled bear exhibit - BioParque do Rio - ZooChat
As we keep walking, we reach a food kiosk that has a nice view to the bengal tiger enclosure, and reach the "Asian area", wich to this date is only holding the zoo's elderly female asian elephant. The area is divided in two large sized paddocks and a large shelter with visitable quarters, that in the future will probably hold a male asian elephant the crew wants to bring from Sorocaba zoo, and the zoo's rusa deers and blackbucks, that are temporarily being kept in the "African Savanna" complex.
Asian area - BioParque do Rio - ZooChat
Asian area - BioParque do Rio - ZooChat
Asian area, quarters - BioParque do Rio - ZooChat
As we leave this sector, we reach the "Carnivore conservation center", wich consists in the zoo's former big cat cage row that was refurbished to look a little better and to hold ocelots, jaguars, cougars and tayras, although only the three first ones are actually being held there. Tayras were removed to ope way for capuchin monkeys (I have no idea why). The exhibits are not spacious, and some have quite poor ambientation. The ocelot one is the only that doesn't need many changes, IMO.
Jaguar exhibit - BioParque do Rio - ZooChat
Ocelot exhibit - BioParque do Rio - ZooChat
Cougar exhibit - BioParque do Rio - ZooChat
Now we have to get back to the zoo's front gate, as we turn the left hand side to reach the "African Savanna", wich took place in an area previously called "Passarela da fauna", that held rheas and deers. It is a considerably large field, that is now equiped with a river safari and an extense elevated path. The institution plans to add giraffes and zebras soon, but for now they only keep ostriches, egyptian geese, aoudads, rusa deers, cassowary and blackbucks (the three last ones will be removed as soon as possible).
African savanna - BioParque do Rio - ZooChat
African savanna - BioParque do Rio - ZooChat
African savanna - BioParque do Rio - ZooChat
The hippo exhibit is located beside everything, and despite not being very large, has a nice underwater viewing and can be seen from the savanna's paths.
Hippo underwater viewing - BioParque do Rio - ZooChat
Hippo exhibit - BioParque do Rio - ZooChat
There's a nice museum near the exit that holds many interesting archives from the zoo's history and artefacts that were found during the renovations.
Museum - BioParque do Rio - ZooChat
Well, I've talked a bit about most of the structures that are present in BioParque do Rio after the big renovation, so now I'll give my personal opinion (as if I hadn't given it during the whole text

) about the general aspect of the whole place. At the end of all, I surelly think the transformation was a huge improvement to the former outdated structure of Riozoo (wich I haven't visited before all the refurbishment, but seen many pictures and talked to people that went there), despite many areas are still not renovated (more than half of the place has been contemplated by the renovation works, but something like 40% is still fenced and closed to the public). My opinion of the immersive experience they claim to have brought to the place is that the contact with the animals is indeed better, once more glass panels, bridges, walkthrough exhibits and viewing points were added, but I think the natural aspect of the exhibits is lacking. You don't feel yourself in the animal's biome. You do feel yourself closer to the species, in an environment that is visually confortable for them, but not indeed similar to the wild, like when you're in Parque das Aves, for example. I think the "clean" aspect of the trails and barriers make them a little too humanized, although they do well the function they were given. Not saying mock rock/fake concrete logs are the solution for everything, but they surely could have made better use of these artefacts, not only inside the enclosures, but also around glass panels and even as barriers. Foliage could have better use too. The big cat/bear enclosures were the weakest point IMO, as they are much smaller than most of the enclosures of their kind in the other major zoos in the country. Despite that, I hope the administration actually focus on the modern zoo conservative principles as they claim they do. We all know private institutions tend to priorize profit, and that might sometimes cause a lack of effort (and resources) applied to actuall conservation. The place now has a structure that is at least the basic (in many cases, indeed above average) needed to develop decent breeding programs, so let's hope they make their best in the following years to ratify the institution as a real ambassador of conservation in the national and international scene.