Knowsley was the only ZTL collections that had slender-billed vultures, highland guans, southern greater gliders and red-throated caracaras
Knowsley was 1 of 2 ZTL collections that had Bolivian squirrels, black-and-white hawk eagles, Indian laughing doves, Irish hares, southern grysboks, chestnut rails, musky rat kangaroos, rufous-tailed hares, eastern pygmy possums, red-shoulder widowbirds, Scandinavian capercaillies, Ussuri grenfinches, western blue rock thrushes and the now extinct eastern woylie
Knowsley was 1 of 3 ZTL collections that had African bearded vultures, chestnut-tailed starlings, Indian Brahminy kites, eastern brown fish owls, Caribbean doves, Senegal red-fronted gazelles, Tasmanian bettongs, Trinidad piping guans and Brazilian saffron finches
Knowsley was 1 of 4 ZTL collections that had Burmese green peafowl, common brown-throated parakeets, flock bronzewings, Eurasian dotterels, northern chestnut-capped blackbirds, Chinese francolins, brown thrashers, Tasmanian echidnas and the nominate Chukar partridge subspecies
Knowsley was 1 of 5 ZTL collections that had Clapperton's and Cape francolins, common reedbucks, Indian axis deer, Muscat gazelles, North American great grey owls, Sulawesi hanging parrots, black and southern bush duikers, pin-tailed sandgrouse, southern speckled pigeons, Spanish sparrows and the now extinct Cuban macaw
Knowsley also had Carolina parakeets, passenger pigeons and Cape quaggas
