A long excerpt from my 2011 review sums up this aviary:
There are what seems like hundreds of silver metal aviaries dotted throughout the zoo’s grounds, and many of the enclosures are the same size of about 5 feet in width and maybe 20 feet in length. They are long, narrow rectangles and something that would be seen in an off-exhibit area of a major zoo but here they plague the grounds like rampant locusts. There are some adequate aviaries but of the innumerable ones that I saw perhaps the only exhibits that were impressive were the large Andean condor and king vulture aviaries.
African walk-through aviary: Some of the birds were in separate side exhibits (West African crowned crane, East African crowned crane, blue crane, African pied crow) while others were free-flying: white-cheeked turaco, vulturine guinea, western-grey plantain eater, Abdim’s stork, Hadada ibis, purple swamphen, cape thick-knee, grey hornbill, fulvous tree duck, white-faced tree duck, cape teal and a blue duiker.