Saint Louis Zoo I believe is the only US facility to have horned guans on display to the public.
Are they a species that will be kept (and bred?) long-term?
Parakeet Auklet - Aquarium of the Pacific
Did the North Carolina Zoo have them at one point?
Are these species managed by the AZA?
Vietnamese sika
banded mongoose
spot-necked otter
golden white-eye
bridled white-eye
South-central black rhinoceros
Eurasian wolverine
Correct me if I'm wrong on the holders, but I think this list is probably mostly accurate:
- Madagascar green-pigeon - Riverbanks Zoo and Garden
- dhole - Minnesota Zoo, San Diego Zoo Safari Park, Bronx Zoo, The Wilds, Zoo Miami
- golden takin - San Diego Zoo
- semipalmated sandpiper - New England Aquarium, Smithsonian's National Zoo
- Conant's mushroom-tongue salamander - Toledo Zoo
- Laysan albatross - Monterey Bay Aquarium
- silvertip shark - Georgia Aquarium
- red-bellied lemur - San Francisco Zoo
- brown-mantled tamarin - Jenkinson's Aquarium
- Malagasy pond heron - San Diego Zoo
- red-backed bearded saki - Omaha's Henry Doorly Zoo and Aquarium, Wildlife World Zoo?, Dallas World Aquarium
- Sri Lankan junglefowl - Central Park Zoo, Minnesota Zoo, Bronx Zoo
- Madagascar partridge - Minnesota Zoo, San Diego Zoo, Charles Paddock Zoo
- jeweled chameleon - Bronx Zoo
- Brongersma's pit viper - Bronx Zoo
- Travancore tortoise - Philadelphia Zoo
- one-toed amphiuma* - Philadelphia Zoo, possibly others
- Anderson's salamander* - Philadelphia Zoo
- bare-eyed pigeon - Buttonwood Park Zoo
- great black-backed gull - Toledo Zoo and Aquarium
*according to
@Coelacanth18's survey