Editing Saint Louis Zoo (section)

===Historic Hill===
[[File:Hyacinth Macaws (Anodorhynchus hyacinthinus).jpg|thumb|[[Hyacinth macaw]]s (''Anodorhynchus hyacinthinus'')]]
[[File:St Louis zoo spectacled caimans.jpg|thumb|[[Spectacled caiman]] (''Caiman crocodilus'') at the Herpetarium]]
'''Historic Hill''' contains the Bird House, Bird Garden, Herpetarium, Flight Cage and Cypress Swamp, Primate House, and Primate Canopy Trails. The Bird House features birds as varied as [[bald eagle]], [[rhinoceros hornbill]], [[hyacinth macaw]], [[burrowing owl]], [[toco toucan]], [[Cape thick-knee]], [[golden pheasant]], [[kookaburra]], [[Mariana fruit-dove]], [[king vulture]], [[horned guan]], [[superb starling]], [[tawny frogmouth]], [[congo peafowl]], and the [[Guam kingfisher]], which is [[extinct in the wild]]. The Bird Garden contains outdoor bird enclosures.

The Herpetarium houses most of the zoo's [[reptile]]s and [[amphibian]]s, including the critically endangered [[Jamaican iguana]], [[Chinese alligator]], [[McCord's box turtle]], [[Panamanian golden frog]], and [[Arakan forest turtle]]. Other species include the [[Komodo dragon]], [[green anaconda]], [[mountain chicken]], [[spotted turtle]], [[false gharial]], [[king cobra]], [[Gila monster]], [[frill-necked lizard]], [[Aldabra giant tortoise]], [[tuatara]], [[reticulated python]], [[tiger salamander]], [[three-toed amphiuma]], [[pancake tortoise]], and over two dozen species of [[pit viper]]s from around the world.

In 1904, the Flight Cage was the largest bird cage ever built, and is still one of the world's largest free-flight [[aviary|aviaries]] at {{convert|228|ft|m}} long, {{convert|84|ft|m}} wide, and {{convert|50|ft|m}} high. The [[Taxodium|Cypress]] Swamp is dedicated to [[North American]] birds found in the cypress swamps of the southern [[Mississippi River]]. Among the birds in the aviary are [[black-crowned night heron]], [[blue-winged teal]], [[bufflehead]] duck, [[cattle egret]], [[double-crested cormorant]], [[great egret]], [[wood duck]], [[northern bobwhite]], [[roseate spoonbill]], [[snowy egret]], and [[American white ibis]]. Primate House and Primate Canopy Trails is home to the zoo's [[monkey]]s and [[lemur]]s. Species included are [[Allen's swamp monkey]], [[Coquerel's sifaka]], [[cotton-top tamarin]], [[Mantled guereza|black-and-white colobus]] monkey, [[mongoose lemur]], [[ring-tailed lemur]], [[spectacled langur]], and [[white-faced saki]]. Primates have some freedom to move between indoor and outdoor enclosures as they prefer.