Just for everyone still making up their mind about this one (like me), let me sketch the current state of the bird collection of Ouwehands.
Most prominent are the hornbill aviaries you see directly when you enter. These hold a variety of species with great hornbill, wreathed hornbill, Blyth's hornbill, rhinoceros hornbill, rufous hornbill and wrinkled hornbill. Although because of winter I don't know which ones will be on show again this year. All but the rhinoceros hornbill are housed well.
Hornbill aviaries | ZooChat
The next main bird eclosure is the giant Urucu aviary, which hold scarlet macaws, scarlet ibis, american flamingo, fulvous whistling duck, wood duck, white-cheeked pintail, inca tern and blue-throated piping guan. The aviary has a lot of indoor spaces for the macaws that regularly breed there. It is large enough to show real flight in the macaws, something that is unfortunately still rare in zoos.
Urucu Aviary | ZooChat
Macaw indoor enclosure | ZooChat
The Ori house has some free living birds like java sparrows and fire-crowned bishop (and nicobar pigeon in with the mouse deer occasionally), but the next important bird area is a set of toucan aviaries. They are spacious, nicely decorated and occupied with green aracari, toco toucan, keel-billed toucan and white-throated toucan, although one of the latter two has gone offshow/left the collection recently. There's also a weaver aviary in RavotApia.
mixed species exhibit | ZooChat
right side of the new Toucan aviary | ZooChat
The (former?) Waddensea exhibit has cormorants, red-crested pochards, scarlet ibis and maybe a few other ducks and geese in with the seals. Just outside of it there's a small-ish enclosure for a pair of saddle-billed storks. The last birds in this corner of the park are the chickens and ducks in the (excellent) petting zoo and a pair of white-naped cranes. The next birds you come across are the humboldt penguins in a simple but nice enclosure.
Saddle-billed stork exhibit | ZooChat
Humboldt Penguin exhibit | ZooChat
Between the polar bears and the brown bears there are two sets of two avaires. One is very large and houses grey crowned cranes, ground hornbill, crested guineafowl and bateleur eagle. A set of smaller enclosures are occupied by a pair of hyacinth macaws and a pair of cockatoos.
Close to it is a pond with a few greater flamingos, and a former red panda enclosure renovated to house snowy owls.
Parrot aviary | ZooChat
Greater Flamingo exhibbit | ZooChat
Close to Pandasia there's a huge pond for pelicans, as well as a construction site for a new flamingo exhibit. The main bird attraction in the last part of the park is a huge avairy providing actual flying space for cinereous vultures and king vultures. Again something that is still not the norm. The last real bird exhibit is a set of two avaires inside the African/mandril house. They are nicely decorated and occupied by Von der Decken's hornbills, greater blue-eared starlings and red-crested turaco.
Cinereous vulture aviary | ZooChat
Aviary inside the mandrilhouse | ZooChat
To conclude the bird collection of Ouwehand the African savannah houses a few ostriches and guinea fowl along with the giraffes.
African plain | ZooChat