I'd argue there are at least three stand-out sections of the bird collection; unfortunately there are few photographs of the first, a walkthrough aviary next to the Regenwaldhaus, but there are a decent number of images of the other two areas of note.
Walkthrough Aviary (Outside Regenwaldhaus)
As noted, there are few images of this aviary and almost all are of the inhabitants rather than the aviary itself - I'd upload some more myself, but I'm currently away from home. The only image I can find is the following, which only shows a portion of the whole:
Nonetheless, this aviary is large, lushly-vegetated and contains a large number of rather nice species, including one big oddity:
King Vulture (
Sarcoramphus papa)
Milky Stork (
Mycteria cinerea)
Asian Woolly-necked Stork (
Ciconia episcopus episcopus)
White-winged Wood Duck (
Asarcornis scutulata)
Cochin-Chinese Red Junglefowl (
Gallus gallus gallus)
Satyr Tragopan (
Tragopan satyra)
Waterfowl Complex
There are a large number of rather nice waterfowl exhibits scattered throughout the zoo - most notably within the Hippo House, and within many of the moats/canals across the site - but a large portion of the waterfowl collection is located within a complex of large and pleasant exhibits close to the centre of the zoo:
View attachment 419230
Owl Monastery
One of the other particular highlights of the bird collection, in my opinion, is this peaceful little corner converted from old zoo structures - someone more informed than I will probably know what this area once contained - to resemble the overgrown and thickly-vegetated ruins of an abandoned monastery which have subsequently been inhabited by a selection of owls and other birds, mostly European in origin. The main body of this area comprises a walkthrough exhibit, with a pair of smaller aviaries at either end.
The species held within this area are as follows:
Western European Barn Owl (
Tyto alba alba)
Black Stork (
Ciconia nigra)
Northern Bald Ibis (
Geronticus eremita)
Red-billed Bluepie (
Urocissa erythroryncha)
Eurasian Great Grey Owl (
Strix nebulosa lapponica)
Eurasian Long-eared Owl (
Asio otus otus)
Spectacled Owl (
Pulsatrix perspicillata)
European Kestrel (
Falco tinnunculus tinnunculus)