Another fitting comparable exhibit to this African Aviary is the large (7000 square metres) Selva Tropicale aviary in Parco Faunistico le Cornelle, in Bergamo, Italy. It is basically a huge walk-through aviary with storks, pelicans, ibises, cormorants, flamingos and cranes, all seen from a boardwalk through a lush wetland landscape. And it also has crocodiles and alligators in with the birds, and from memory quite a few of them! There are also lemurs and muntjac, but they don't share with the crocodiles at least.
Thanks, I was not aware of this aviary, despite spending quite some time in going through Italian zoo info and pictures. As you say, Italy is even more underrepresented even though there seems to be quite a number of good zoos.
Alas, while we rightfully talk about under-representation from French zoos on this forum, Italian zoos receive even less attention. Though, to be honest, while Le Cornelle is a decent zoo, it is also a decisively ordinary zoo, and I do not think any of their enclosures warrant inclusion in this thread. There are no interesting concepts there that are not executed better elsewhere.
There are so many good zoos that have a consistent line up of fine exhibits, but lack any stand-out punch. The earlier mentioned Tierpark Hellabrun in Munich would be another example, but there are so many more. There will be plenty of good zoos not on this list, including quite a number of zoos that were included in the 50 must see zoos thread.
It is also interesting that big zoos with big budgets do not necessarily have best exhibits. Besides Zurich, innovative zoos are smallish to mid-sized.
Less visited zoos, especially far from the big cities, hide many of the best and most innovative exhibits which zoochatters don't know about. For example this gigantic hoofstock paddock in Askanya Nova, Ukraine. The best tiger exhibit in Europe might be in a small zoo Eberswalde in Germany. There is one-of-a-kind walkthru with chamois, ibex and several other ungulates in the Pyrenees Animal Park in France. Then there is this zoo in subarctic Scandinavia with gigantic polar bear exhibits overlooking vast taiga forest.
I mostly agree with you and I have the feeling that there are two main factors that play into this:
1) private ownership, the most innovative zoos seem to be privately owned, this probably gives the space to execute creative ideas without constraint. Doue, Burgers', Hagenbeck (historical) and Apenheul (now a foundation) would be prime examples. Even Beauval and Pairi Daiza could be said to be innovative in their own regard, it just often doesn't boil down to unique husbandry innovations

. But being privately owned is also a risk if the creative ideas aren't exactly great like the current situation in Hagenbeck or Zoo de la Palmyre show. City-owned zoos have the cushion that they can focus on stuff they like and don't have to be economically independent (Frankfurt...), but planning and construction often takes ages and ideas seem to be more restrained as there is oversight.
2) Many private zoos have less space constraints than the municipality owned ones, which are often located downtown. Not only is there more space available, there is a whole lot less historic infrastructure that needs to be demolished/incorporated and nobody is nagging about monuments

.
In the case of smaller publicly owned zoos there can quite often be a wish to stand out, and standing out with a limited budget can make for some innovative ideas or choices.
Fortunately there are also some big non-private zoos that don't follow this trend, Tiergarten Nuernberg and Tiergarten Schoenbrunn seem prime examples that even non-privately owned zoos can be leaders in innovation.
Some of the recent selections in this thread have certainly highlighted how European zoos dominate North American zoos when it comes to large aviaries. There are far more top-quality owl and vulture exhibits in European zoos, but the massive aviaries featuring really big birds is incredible to read about. In North America, there's the wonderful San Diego aviaries, Omaha has a huge one that was recently revamped, St. Louis has its iconic flight cage, and Miami has its famous 'Wings of Asia'. However, there are
loads of gargantuan aviaries in European zoos and that continent is leagues ahead in regards to quality walk-through bird habitats. Part of the reason is likely because of the litigious nature of Americans, who cannot have walk-through lemur or monkey enclosures, because someone might sue the zoo, even though those exhibits are as common as raindrops in European zoos. The thought of putting big storks, pelicans and cranes in with people is scary to most North American zoo visitors, and a simple peck would result in a lawsuit. I still vividly recall my very first day in Europe on my big summer 2019 zoo trip, when I visited Natuurpark Lelystad in the Netherlands and I went into a walk-through enclosure for Pere David's Deer and another one for Wisent! Welcome to Europe.
And what have the Americans ever done for us: they gave us cheap replicas of Disney's Animal Kingdom in the form of Hannover, Valencia etc.. Thank you guys, well done
