Marwell Zoo has celebrated the new arrival last month and has announced it in time to celebrate World Okapi Day on Saturday.
The rare youngster, born on September 10 to proud mum Daphne, is the third okapi born at the zoo in as many years and the 18th in its history.
Keepers say the birth is another huge success for the European Ex-situ Breeding Programme, which helps protect animals, often known as the forest giraffe.
They are one of Africa’s most elusive and threatened animals.
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Hoofstock keeper Zoe Newnham said: “We’re so excited to have another okapi birth here at Marwell.
“This amazing achievement is a testament to the skill and dedication of the zoo’s animal care team and their success within the Ex-situ Breeding Programme, helping to support this endangered species.
“Our team works hard to ensure the okapi’s have the best care, while closely replicating their wild habitat.
“Before the arrival of the new calf, we created a dark, warm, cosy area known as a ‘creep’ to give mum, Daphne, space and privacy with the newborn, just as okapi would in the wild.
“Daphne’s a fantastic mum and this calf is already showing signs of being curious and confident.”
To give Daphne and her calf a calm start, keepers created a dark, cosy “creep” area to mirror conditions in the wild.
The okapi house will remain closed to visitors for now, though other members of the herd can still be seen nearby.
The calf will stay indoors through winter before venturing out in the spring.
Known for their zebra-like stripes and long, purple tongues, okapis are actually the giraffe’s closest living relatives.
Marwell Zoo, home to more than 150 species including tigers, rhinos and giraffes, continues to play a leading role in global breeding efforts to safeguard endangered wildlife.