i really want to see magnificent frigatebird5. any frigatebird species
Probably the hardest one to see here is the Oarfish! Platypus are not all that hard to see wild here in Australia if you know where and when to look (plus they're currently on display at San Diego Zoo if that's closer for you), and whalewatching is a good way to see baleen whales (it is time dependent though, whales are migratory so they won't be in an area all year). I do believe Sumatran and Javan Rhino are present in zoos, although I don't know how common they are or which zoos have them.Platapus
Any Balien whale
Sumatruan/Javan Rhino
Oarfish
To name a few
Moose: 6 ZTL collections in France
Saiga 2 ZTL collections: Kazakhstan and Ukraine
Hartebeest: Cape hartebeest in Wroclaw
Cape Buffalo: 1 ZTL collection in France
Mountain Anoa: Krefeld
Musk Ox: Mulhouse
Duiker: Red duiker (5 ZTL collections in Germany etc); western blue duiker (2 ZTL collections in France), yellow-backed duiker (Beuval)
Warthog: 3 ZTL collections in France
Babyrusa: Lisieux
Kiang: Sigean
Baird's Tapir: 2 ZTL collections in Germany
Civets: Many species in ZTL collections
Wolverine: 6 ZTL collections in France
Honey Badger: 1 ZTL collection in Germany, 2 in UK
Striped Skunk: 5 ZTL collections in France
Dhole: 7 ZTL collections in France
Dingo: 4 ZTL collections in France
Aardwolf: 2 ZTL collections in UK
Brown Hyaena: 2 ZTL collections (Prague and Germany)
Iberian Lynx: Mervent
Bobcat: 2 ZTL collections in France
Canadian Lynx: 2 ZTL collections in France
Marbled Cat: 1 ZTL collection in Russia
Rusty-spotted Cat: 2 ZTL collections in France
Temminck's Cat: 1 ZTL collection in France
Walrus: 3 ZTL collections (Belgium, Germany and Netherlands)
Arctic Seals: Arctic ringed and bearded seals (Brest), harp seal (2 ZTL collections in Russia)
Gelada: 9 ZTL collections in France
Drill: 1 ZTL collection in France
Tenrec: Greater hedgehog tenrec (1 ZTL collection in Czechia, 1 in Germany, 6 in UK), lesser hedgehog tenrec (Thoiry), tailless tenrec (1 ZTL collection in Denmark, 1 in Ireland, 5 in UK)
American Opossum: Common opossum (Plzen), Virginian opossum (1 ZTL collection in Germany, Ireland, Lithuania, Netherlands, 3 in UK)
Echidna: Short-beaked echidna (several ZTL collections in Europe)
Kiwi: Brown kiwi (1 ZTL collection in Czechia, 3 in Germany, 1 in Netherlands and 1 in UK)
Martial EagleL Sciez
Shoebill: 1 ZTL collection in Belgium, Czechia, Germany and UK
Adélie Penguin: Madrid Faunia
Magellanic Penguin: 3 ZTL collections in Germany and Spain, 2 in Italy, 1 in Portugal and UK
Inca Tern: 6 ZTL collections in France
Crested Fireback: Sanary sur Mer, Amiens, Cleres
Horned Guan: Walsrode
Spix's Macaw: Pairi Daiza
Kākā: Stuttgart
Puna/James's Flamingo: Berlin Zoo and Slimbridge
Black-necked Crane: 2 ZTL collections in France
Goliath Heron: 5 ZTL collections in France
Blakiston's fishing owl: 1 ZTL collection in Russia
Hummingbird: Amazilia hummingbird (2 ZTL collections in Germany and Italy, 1 in Netherlands), black-throated mango and crimson topaz (Walsrode), Cuban emerald, purple-throated carib, rufous-tailed hummingbird, velvet-purple coronet, violet-tailed sylph, white-whiskered hermit and green-crowned brilliant (1 in Italy), green-throated carib (Villars les Dombes), ruby topaz (2 in Germany), sparking violetear (1 in Germany and 1 in Italy)
Sunfish: Ocean sunfish: 1 ZTL collection in Denmark and 1 in Portugal
Leafy seadragon: Lisbon Aquarium
In each case, I have prioritised France in front of other European nations and have avoided mentioning ZTL collections from other continents
Bengal Tiger
6. Golden Eagle
Golden Eagle (40 holders)
ABQ Biopark
African Lion Safari
Alaska
Alberta Bird of Prey Foundation
Bay Beach Wildlife Sanctuary (0.1)
Birmingham
Bronx
Calgary
California Raptor Center
Carolina Raptor Center
Cascades Raptor Center
CuriOdyssey
Elmwood Park
Folsom
Gabbert Raptor Center
Grizzly & Wolf Discovery Center (0.1)
High Desert Museum
Idaho Falls
Indianapolis
John Ball
Lehigh Valley
Lindsay Wildlife Experience
Living Coast Discovery Center
Maine Wildlife Park
Micke Grove
Navajo Nation
Northwest Trek
Orange County
Oregon
O.W.L. Orphaned Wildlife Rehabilitation Society
Safari Niagara
San Diego Zoo Safari Park (1.0) (offshow, programs)
San Francisco
Sulphur Creek Nature Center
Topeka
Tracy Aviary
Turtle Bay Exploration Park
World Bird Sanctuary
Zollman
Zoo Montana
Occasionally seen from shore or by whale watching tours1. Harbor Porpoise
Fresno, San Diego3. Socorro Dove
SDZSP4. Platypus
SeaWorld SD9. Adelie Penguin
Monterey Bay Aquarium12. Ocean Sunfish
16. Luzon Cloud Rat
The rest of your list you'd need to travel abroad.
7. Wild Boar (Real ones, not just the random feral pigs I sometimes see in India
Some I'd like to see, even if not common in zoos or in any at all, in the wild at least.
A useful forum for primates in North American zoos is: Gibbons, Geladas, and Guenons Galore! -- Primates in North America
You may also find Prosimians in captivity useful
I would be very surprised if there are any live mountain gorillas, indris, narwhal, great white sharks, Javan rhinos, Sumatran rhinos, kakapos, dugongs or giant forest hogs in North American zoos
Aye-aye: Cincinnati Zoo, Cleveland Metroparks Zoo, Denver Zoo, Duke Lemur Center,
Omaha’s Henry Doorly Zoo, Philadelphia Zoo, San Diego Zoo (May 2022)
Any loris: Red slender loris: Memphis Zoo (May 2022)
Greater slow loris: Duke Lemur Center (December 2018)
Pygmy slow loris: Akron Zoo, Bronx Zoo, Brookfield Zoo, Cincinnati Zoo,
Cleveland Metroparks Zoo, El Paso Zoo, Lake Superior Zoo, Lee
Richardson Zoo, Lincoln Park Zoo, Little Rock Zoo, Memphis Zoo,
Mesker Park Zoo, Miller Park Zoo, Moody Gardens, Omaha’s Henry Doorly Zoo, Philadelphia Zoo, Prospect Park Zoo, Pueblo Zoo, Turtle Back Zoo
(May 2022)
Tarsier: Probably none in North America
Probably the hardest one to see here is the Oarfish! Platypus are not all that hard to see wild here in Australia if you know where and when to look (plus they're currently on display at San Diego Zoo if that's closer for you), and whalewatching is a good way to see baleen whales (it is time dependent though, whales are migratory so they won't be in an area all year). I do believe Sumatran and Javan Rhino are present in zoos, although I don't know how common they are or which zoos have them.
Oarfish is the hard one though! Sightings of oarfish, both alive and dead, are incredibly rare. So rare in fact, that they usually make the news! If you want to see one, you just have to be incredibly lucky and hope one washes up near you! Several aquariums in Japan have tried to keep oarfish that washed up, but to nobody's surprise, all died in a matter of hours.