Humboldt penguin enclosure

Are there any other bird species held in this aviary?

@Mr Gharial Briefly, yes. In fact, this enclosure is located inside of the "Bird Kingdom" aviary, a large aviary that the park itself calls "the largest aviary in Europe," what it is not. The flying birds can simply enter this enclosure. Since the aviary was largely closed due to bird flu, I could not get to see all the species and their information boards, but based on various sources, this is at least the majority of the birds that live in the Bird Kingdom aviary, better known by its Dutch name 'Vogelrijk':
- Humboldt penguin (Spheniscus humboldti)
- Greater flamingo (Phoenicopterus roseus)
- Eastern grey-crowned crane (Balearica regulorum gibbericeps)
- Scarlet ibis (Eudocimus ruber)
- Northern bald ibis (Geronticus eremita)
- Straw-necked ibis (Threskiornis spinicollis)
- Goliath heron (Ardea goliath)
- Common shelduck (Tadorna tadorna)
- Pink-backed pelican (Pelecanus rufescens)
- Little egret (Egretta garzetta garzetta)
- Black stork (Ciconia nigra)
- Common black kite (Milvus migrans migrans)

Here is what the Harbor Seal exhibit looked like in 2015:



Photo by @vogelcommando

I remember at one point the seals being kept in an aviary space with white-tailed sea eagles.